But so why didn’t Dumbledore feel the troll and intercept it much sooner?
In canon, the troll was in Hogwarts already, because Dumbledore brought it in to guard the Sorcerer’s Stone. If he did something similar in Methods!canon, then Quirrell could easily have taken advantage of this to escape notice by the wards.
No. In canon, there were two trolls. Everyone seems to forget this. But then again, in canon Hogwarts was never described as having the same kind of comprehensive ward system it has in HPMOR.
In canon, the troll was in Hogwarts already, because Dumbledore brought it in to guard the Sorcerer’s Stone. If he did something similar in Methods!canon, then Quirrell could easily have taken advantage of this to escape notice by the wards.
No. In canon, there were two trolls. Everyone seems to forget this. But then again, in canon Hogwarts was never described as having the same kind of comprehensive ward system it has in HPMOR.