Question - F6 had no shot of ever getting to the ball? Or just no shot at catching it? If F6 had no shot at getting the ball (not just in flight, but at all for any possible play), then you might have OBS.
If the ball had not passed F6 when near-contact occurred, and F6 had a shot at getting to the ball (even after bouncing), I still have interference. If F6 getting to the ball late prevented ANY play (even just a play to keep runner from going home, or BR from attempting 2nd, etc), it's still a play, and it's still before the batted ball had passed an infielder.
I admit, though, that this is a grey area, and look forward to Mr. Rowe shooting me down, and/or debeau's NZ interp that BR is out and R1 scores. (
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