Suppose you have an international layover at an airport that connects to a different non-partner airline from your arrival flight airline. My understanding is that you will need to claim your baggage and then recheck your baggage to the next flight since the next flight is a non-partner airline and therefore they won't ship your baggage to final destination (correct me if I'm wrong).
However, aren't most baggage claim areas in airports located AFTER passport control/immigration? Hence, according to this: Catching separately ticketed flights through an airport without leaving the transit area, it suggests that you will need to go through passport control/immigration despite the fact that you're just doing a layover/transit and do not intend to leave the airport (correct that answer if it's wrong).
If that is the case, will they let you past passport control/immigration with just a "Transit Without a Visa" privilege (no actual Transit Visa is possessed, just the passport's innate TWOV privilege) so that you can claim your bag and check it into your next flight? Will they seize your passport and/or follow you around or something to ensure that you don't run off? Will you have to go through airport security again?
Note: I'm looking mostly at airports in Europe, Asia, Australia/NZ, and South America, i.e. not US/Canadian airports.