Unable to catch up a survivor

Skarlaxion

So i was playing as a nemesis, a normal 4,6 m/s killer and at the middle ofthe match i saw two survivors that were running together. I managed to injure them (or i guess they did it on purpose) and after a while i understood that i couldn't do anything about it, because they were both running "made for this" and one of them equipped "teamwork: power of two" and "blood pact", is this even allowable to run? In thory they could just run from me forever if they were the last two, and i don't think that bloodlust mechanic can help in this situation