My favorite little cross-language coincidence is how lots of place names up north end in 'vik'. In the old Viking world, there's Reykjavík, Keflavík, Grindavík, etc in Iceland. Then over in Norway, you've got Larvik, Malvik, Rørvik, etc. In Sweden: Västervik, Valdemarsvik, Örnsköldsvik. Then in the new world, Greenland has Aasivik and Arsivik. The Eastern part of the Canadian north has has Aquiatulavik and Iqiattavik…
Given that a cove is actually a place, it is reasonable to conclude that there is a connection between the use of this suffix as a descriptor for ‘place’ in both language groups. There may not have been ‘extensive linguistic exchange’ between Northern American and Northern Europeans, but there is evidence that contact had been made, and it’s not outside the realms of possibility that the vik suffix was transferred on…
I’d say it’s reasonable to say that there could be a connection but it seems like quite a leap to conclude that there is a connection based on current knowledge.