No, it is not.
The only link between The Curse Spread Quest and Grimvale Quest, is the part where you need to 'active' the teleport to enter feroxa, but you don't even need to do this when feroxa is about to spawn, you can do this any day.
This is the room in grimvale that is used to active the teleport, you just need to move the tiles until they look like a 'V':
Image taken from tibialatina
Question Revival II contestJanuary 06, 2021
Third Anniversary InfographicDecember 28, 2020
Edit notifications for users who downvoted the postNovember 02, 2020
Looking for a community managerJune 09, 2019