I feel like there must be something being lost in communication. Since this is a docking port connector, they ought to be able to block it off on one side with

I feel like there must be something being lost in communication. Since this is a docking port connector, they ought to be able to block it off on one side with some sort of temporary airtight seal and measure the direction the air within flows in to gradually narrow down where the leak is. I get the impression that maybe NASA is avoiding openly discussing the cause of the leak to be nice to roscosmos (because despite all the geopolitical conflict, they're still trying to keep the station running as is for a few more years).