| zarmain |
I would say yes in example 1. Each time the rogue moves, he needs a new stealth check and the guard gets a new perception check.
In example 2, the setup is "walking down a trapped corridor" we need more information. Does the rogue have "Trap Spotter" rogue talent. if yes then he would get one check when approaching. If the rogue doesn't have that rogue talent and is not actively searching for traps, then he doesn't get a free perception checks.
(If the DM is asking for a check every round, that would imply something else is happening in the hallway. Something that could be invisible or hidden. But this is also a good reason for the DM to make these perception checks in private as to not alert that player.)
I hope this helps