I've reduced my Marriott usage a bit in recent years (more family AirBnB stays, for example) and I'm trying to figure out the best course of action to collect points.

I'm Gold Elite, mainly through having the branded credit card.
I don't use the credit card for anything other than Marriott stays.
I've got a ton of Alaska and Chase Ultimate Rewards points that I use for travel.

If I select Marriott Points, I'll get a 25% bonus points on all stays. Does that same bonus apply if I select to collect Airline Miles instead? It doesn't look like it, meaning I'm better off collecting Marriott Points and then using or transferring them out as needed, but I couldn't get a definitive Yes or No from the website.

Even though the Bonvoy card is Chase branded, I assume I CAN'T get Chase UR points on it?

Thanks y'all!