If you need to get rebooked for a missed connection, will they put you on any Star Alliance flight (e.g. an Air Canada flight) or will they prefer to give you hotel/meal vouchers instead and make you wait to the next morning?

-United is clearly at fault
-There is no other United flights on that day
-But, there is one Air Canada flight to your destination.

What will they do?

Edit: I am just curious to know if UA airport agents are able to rebook someone on an AC codeshare flight. I understand they need to be "at fault", they have policies and blah blah blah...

From my personal experience, UA phone agents are unable to rebook someone on an AC flight even if there is some major schedule change or flight cancellation. (Phone agents are clearly unable to rebook someone on a AC codeshare flight, not solely "unwilling".)

By "rebook", I mean "rebook for free".

Edit: I have no status.