Do beer chasers make vodka sweeter?

Factual Questions
1

Since it’s summer, I’ve been at a few parties, and parties lead to drinking… sometimes I’ll stick to vodka shots (Georgi is cheap and inoffensive) with a soda chaser. Recently though I decided to try vodka shots with a beer (Yuengling) chaser (same vodka). Whereas usually Georgi is mostly inoffensive, though still obviously vodka, this time it had an incredibly sweet aftertaste, every time!

Is there something about using beer instead of soda as a chaser that makes vodka taste sweet (this is still just plain Georgi, not some flavored vodka)? Or was this some strange coincidence, and I happened to sample a bottle of Georgi that was unusually sweet on the same night I decided to try a beer instead of soda chaser? If so, why was it sweet? And if not, why does beer fool the taste buds into thinking vodka is sweet?

2

Presumably because beer is bitter, so it makes vodka (or whatever) drunk after it taste sweeter by way of contrast.

No doubt this commonsense notion of “contrast” could be cashed out in terms of fatigue of the taste buds, or opponent processing in gustation, or some such. I do not know enough about gustation to know how this would play out in detail, but we really don’t need to go that deep to intuitively grasp the idea of contrast in taste.