So, the north always seemed a better conclusion to me.
Per the article, the image of the possible wreckage is about 100 miles south of Bangladesh. That’s not the far offshore. I don’t know anything about the prevailing sea currents in that area but its curious that evidently nobody (e.g., fishermen or cargo ships) ever reported seeing any debris in that area nor did anything wash up on local shores. At least there were no such reports that I’m aware of.