Interference

[UmpireErnie]

Originally Posted by Manny A

You cannot delay an interference call to see what happens afterward. When it happens, you call it. The only exception is on umpire interference by the plate umpire with the catcher's throw to retire a runner.

When it happens on a foul fly, you have to judge at the moment the interference occurs that the fielder could have made the catch with ordinary effort had there been no interference.

I originally posted the play mentioned in the OP. Working as BU in 2man system. While I agree you don't delay this call like a delayed dead ball, I am going to hesitate long enough to make sure there is a possibility of an out. I saw the contact then looked for the ball to decide if it was going to come down in the field of play. My partner at PU was of course tracking the ball from a better angle to see where it was coming down and made the decision a beat ahead of me.