Originally Posted by Often1

Moreover, none of the border control or anecdotal discussions are remotely helpful to OP. Without knowing the delivering carrier, we do not know that carrier's policy regarding through-checking bags with lengthy connections/stopovers.

As an example, UA does not through check bags with overnight connections. Thus, in this situation, OP's bags would be checked to VIE even though the ordinary practice on a routine connection would be for the bag to be delivered to OP at PRG.

Details will get OP the accurate information he wants.