I seem to recall a documented incident being recalled in "Flypast" of a Lancaster doing a slow roll over the top of a B17!
The recovery of a BA 747 after losing all four engines
and forward vision in a volcanic dust cloud over Indonesia.
The pilot of the Andover I was in the back of who was 0ooh so nonchalant with wheels and flaps down on the edge of thunder storm between Sydney and Nowra, when I watched the wings bending.