Respawn timer in Hollow Halls?

[i_got_blisters]

(edit: i did some science and bosses respawn after 30 minutes. Loot boxes and mobs did not.)

[XxTheNomadSoulxX]

I believe once you have passed a certain threshold everything will respawn. As you are about to exit the dungeon within about an arm's length of the door, usually everything comes back.

[OneCarbon]

I was told on discord you leave the hollows you have 30 minutes to get back inside and from personal experience even when you go back in 10 minutes you will have the lower floor entry baddies back again. It's best to have someone stay in the citadel and each of you leave to drop items and come back individually. Placing an alter at the entrance to some of the hollows is also suggested so you don't have to hoof it back.

[i_got_blisters]

So I did a little science. I went afk at the 1st check-point after the 1st boss. After 35 minutes the 1st boss respawned but none of the mobs respawned. The skeleton spawners did not respawn. No loot boxes respawned. Only the boss respawned.
I killed the boss again and waited another 30 minutes. Boss respawned again.