I understood what you meant. I’m just thinking about how the game would calculate it. So I redid The Surge with the extra tile triggers and The Clock with and without and they all amount to 792xp. So the act total is the same, just running, no kills. The Clock with rejects is much easier to arrive at the safe room door than The Surge, IMO.
Edit: Forever is still broken, so if people want easy xp with no enemies, you can do that with the broken spawns. It nets 640xp until the last open area and depending on the few enemies that do spawn there could also mean access to the safe room door.