Visible crew/equipment: When Cage exits his office building on Christmas Eve, the reflection of a boom mic is visible in the revolving doors.
Visible crew/equipment: In the scene when Jack and his friends are at the bowling alley, Jack bowls down the aisle. When the bowling ball is just about to hit the ten pins you can see a reflection of the camera filming the scene in the shining bowling ball.
Answer: More of an alternate reality. He really was living the life he'd have lived if he'd come back from his flight. The "angel" placed Jack in an alternate reality, then put him into the past in his original reality after he'd learned from his experience.
Phixius ★