Before the matches started, Lyon needed a 5 goal win if Ajax loses by 1 (or a 4 goal win if Ajax lose by 2, 3 goal win if Ajax lose by 3 etc).
So when the 2nd half started and Ajax were losing by two, Lyon needed at least a 4 goal difference (5:1). They scored them with ease and then they scored 2 more just in case
It was really hilarious. Lyon needed so many goals that Dinamo players couldn't even act as if they're fighting. They were forced to let Lyon do whatever they wanted and they couldn't hide it.
P.S: And if there was a deal (and there was a deal) it happened at halftime.