Helpfully that scenario is about the only one not covered by the following link.
However as the Conference League winners would get a spot in the Europa League I believe it wouldn’t affect the allocation of other places as it’s effectively an extra spot. The same as if the Europa League or...
I can’t see either Newcastle or United not getting top 6 so Sunday is almost irrelevant.
For 7th to get a European spot then both cups have to be won by top 6 sides. I think there may be a couple of other ways 7th or even 8th might be able to qualify (without winning a cup) but they are far too...