Continuity mistake: Sam hires a personal chef, Sonia. When Carly, Sam and Freddie are sitting at the table and Spencer is talking to them, Sonia takes the blueberry muffins out of the oven and puts her oven mitts down. Next, Spencer starts walking away. Then Sonia is putting down her oven mitts again. There is no way she could pick up and put down her oven mitts that fast. (00:13:15)
IHeart Art - S1-E14
Continuity mistake: When Spencer is working and the dentist pushes back the tongue and his saliva sprays on Spencer, you can see that every time it switches back to Spencer, the wet stain on his shirt decreases in size.
Continuity mistake: In the beginning, Carly gets a bowl and fills it with popcorn up to about 2/3 full. The camera cuts to Sam, then back to Carly, and the bowl is barely full. The camera goes back to Sam then to Carly again, and the bowl is 2/3 full again. Freddie walks in, and the bowl is barely full again, which Carly now fills with popcorn.
Continuity mistake: When Carly's cousins come over, Sam goes upstairs to read a book. When her cousins are gone and Carly goes upstairs, she sees a boy rubbing Sam's feet. In between shots, Sam's right foot goes from facing inwards to being flat.
Continuity mistake: In "iGo to Japan", when the iCarly crew, Spencer and Freddie's mom have to jump out of the airplane, Freddie's mom jumps out of the airplane with out buckling the parachute backpack in a rush to follow Freddie. But when everyone has landed, she is struggling to unbuckle and take off the backpack.
Continuity mistake: When they have the first meeting with the techfoot people, Sam is eating a sandwich. Every time the shot goes back to her and Carly, the amount of the sandwich she has eaten changes. Sometimes there is a bite taken, and then the next time there isn't a bite taken out of it.
IQuit iCarly - S3-E8
Continuity mistake: Carly, Sam, Fleck and Dave are sitting at one table at the Groovy Smoothy sipping a new smoothy flavor with T-Bo standing next to them. Suddenly the smoothy gets too spicy so all four go to another table and gulp down other people's waters then sit back down. The waiter places two glasses in front of Dave and Fleck. The waiter starts to pass behind T-Bo with 2 more glasses of water, but the shot immediately cuts to Sam and Carly drinking water.
Continuity mistake: When Sam, Carly, and Ernie the dance coach are backstage hearing about the talent competition, his hands and clipboard move position from shot to shot.
ILike Jake - S1-E4
Continuity mistake: When Sam walks in on Spencer wearing the plaster head, just after he points out the breathing and feeding tubes, there is plaster smeared all over the left tube that vanishes, reappears, then vanishes again in following shots.
Continuity mistake: After Gibby is kicked into the stack of boxes, he slumps to the floor and a large sleeping bag or pillow appears beside him only to disappear in the following scene. Then when he takes off his shirt, a yellow extension cord appears on top of the boxes.
Continuity mistake: In "iGetPranky", when Carly and Spencer begin talking, Carly turns off the TV before they start talking. Then she turns off the TV once again.
Continuity mistake: When Freddie first tests Sam's emotion with "MoodFace," IN LOVE is written in red. Later, when he shows the results to Carly, IN LOVE is written in green.
Continuity mistake: Spencer is talking to the Sunshine girls about stealing his spot. After he gets pushed in the street, when his skateboard goes flying and breaks in two, one half goes offscreen, and one goes under the table. In the next shot both halves are by his feet, but in the next shot they are back in their original positions.
Continuity mistake: When Sam bangs on the locker with the hammer, the amount of damage on the metal repeatedly changes; it decreases, increases, decreases, and so on.
Continuity mistake: When Spencer and Carly are blowing bubbles to the ceiling, when the bubbles pop, and the soap comes down, Carly's hair is all knotted and messed up. But when she sits up, her hair is perfectly parted and straight.
Continuity mistake: When Lewbert is on the ground and everyone's in the lobby, you can see that Carly's shoe doesn't have a large wart before Lewbert screams, "Where's my wart!"
IParty with Victorious - S4-E10
Continuity mistake: When Sinjin is on the game that malfunctions, he flies out the window. Before he hits the window he's facing up; when he's about to hit the pool, he's facing down.
Continuity mistake: When Freddie wrestles Carly to the floor, there are three shots of her lying on the floor as they argue. The first two show her head in the same spot on the floor; the third shows her head in an entirely different spot (look at the floorboards).
Continuity mistake: There is a scene where the iCarly gang are arguing with Nevel. Sam went to beat Nevel up, which during the process made her hair messy and her headband slipped backwards. However, in the next shot her hair is not messy and her headband is perfectly normal. This keeps happening several times throughout the scene.
Continuity mistake: When Mrs. Benson walks into Carly's apartment holding the clothes she picked out for Freddie, the clothing repeatedly turns around in her arms and also when she places them on the counter.
Chosen answer: I don't know how to answer the first question but for your second question, there is going to be an episode after iPWV, called IDate Sam & Freddie which will deal with their kiss from iOMG. IParty with Victorious will not be related to IDate Sam & Freddie.
The I date Sam and Freddie proves that they are a couple.