No, I don't think anybody, including DFO, is actually monitoring it.
Basically what happened is that, through negotiations, they were able to close down the west Greenland inland fishery, to a large degree, and give it a quota. Unfortunately, the same salmon that go up the coast of west Greenland and then come down through the Labrador Straits and out into the area off Newfoundland, between Newfoundland and Greenland, were outside the EEZ zone, the economic limits, and there's absolutely no surveillance by NASCO.
NASCO, really, the North Atlantic salmon commission, is a joke. They haven't done one lick of surveillance since they took over in 1984.
Basically the problem that was happening in Greenland, where all the scientists agreed.... The Greenland fishery was going to collapse the salmon stock. Just move down the way, a little farther south, and everybody went right back to fishing salmon without any big problem. Between 1985 and 1990, the salmon stocks in the Atlantic Ocean dropped by 55%. Since then, it's just been a continual tail off. I think what's happening is.... If they miss any salmon in that area, then they go and try to get some more off east Greenland, which is in the middle of nowhere, as everybody knows. Nobody lives up there. Anybody can do pretty much what they want. The IUU fisheries are just hammering the place.
The only big river left with a really good salmon run, up until 2020, was the Tana River in northern Norway and Finland. It just got closed for fishing this year because of the collapse of the wild stock. It won't be long before there's no Atlantic salmon stock left in good shape, period.