I agree with UJC that the B-17 may have been somewhat out of position in timing,but then `heavies` don`t have much ability to `catch-up`.Another point is that if the `fighters` were allowed to come ``down` from their normal `pass altitude` that has to be done well before turning in,so you can see the heavies above the skyline( and that blue sky) and then come up to the correct level,and as I noted in #16,,if you can`t see the other aircraft,get out.Briefly embarassing for yourself ,but better than what possibly happened here.
On another point,the video of the P-63 `Walkaround`,it was mentioned by the pilot that there are blindspots,due to doorframes,etc,but his seating position appeared to be quite `low`,.He may not have been the pilot in this case,but you should really be up and head swivelling,eyeballs on stalks when formation flying..