Mr. Belvedere was airing concurrently with Who's the Boss on ABC after-all.

Here's Bob Uecker's guest appearance (https://www.chicagotribune.com/news/ct-xpm-1986-04-08-8601250769-story.html) on WTB (https://www.imdb.com/title/tt0747847/) in case you're wondering:
r2-vx3rg268

I don't think that it's made clear that he's supposed to be George Owens or he's playing himself, in a take on his Miller Lite (https://www.youtube.com/watch?v=DPh4iF76LbU) ads.

https://i.pinimg.com/736x/7c/24/1b/7c241bd0c53b279060199b6b32e7a375--tony-danza-dodgers-baseball.jpg

Probably was playing himself because of the ads.

Don't forget, Tony showed up too late to play poker with Mr. Belvedere and famous friends in one episode.