I tend to be hands off when it comes to other umpires and their decisions. So I don't think I would intervene but if my partner came to me tell'em what I think the rule is .
In the second sitch partner comes to me I would not apply the rules incorrectly. We as a crew would sack up and take the berating we would surely get.
I had the whole BOO/ illegal sub/unreported sub thing a couple of weeks ago with a partner somewhat dazed and confused, a "coach who is a legend" and myself. It was quite a discussion. I held my ground, I was correct in the application of the rule, and actually got an atta boy from the coach at another game. He had sent an email to our sectional rules person who backed me up......