Couldn’t a few millimeters hole be drilled through the wall and the other side investigated via fiber optic video feed?
Ideally, yeah. We’ll have to wait and see. If Zahi were in charge now, he’d be loudly condemning the notion that there’s anything there, then would wait a few years while not-too-cautious employees were quietly hacksawing through the walls; if there were anything there, he’d then have everything set up for the big reveal, march in with cameras in tow, and take credit for the “new” discovery. But at least it would get done. Not sure there will be much right now, unless there’s a lot of money coming in to do it.