To the 22nd Amendment question: I found a "loophole" how you can serve for more than ten years combined. If someone succeeds twice without running for a full term the first time. For example if Ronald Reagan had really picked Gerald Ford as his running mate in 1980 and he (Reagan) had not survived the Hinkley shooting on March 1, 1981. If Gerald Ford then succeeded to the presidency again after serving from 1974 to 1977, he should have been eligible to run in 1984 and serve to January 1989.
Yeah, that's pretty much a potential example-in-action of how I described it above lol