Are the hackers really returned the hacked amount? That’s too impossible since they work to hacked the system and yet they’ll return it?
You can check it first before arguing it would not impossible or not. As long as the funds were still in the hacker's wallet and it can be sent to the anywhere try to take a look at this
https://twitter.com/PolyNetwork2/status/1425509322126024708?s=20You can track whole of address that already published by polynetwork