Don't you think this is a bit weird?
No, it's not. Haven't you seen mum, dad, pup, dog, meow, brother, sister, uncle, aunt and all sorts of definitions when two or more accounts found connected even on the forum where there are no IP log, and anything else to check except wallet connections? I have not looked at the case but it sounds like the sportsbook was playing lottery and only these two friends won it while there were thousands of others was playing too.
If megapari did a lucky guess, I'll say it's a helluva new level of lucky.
Ask how many users they have, you can easily figure out the odd to win 😉