“I did a quick google about the meeting between Ben Gurion and the Chazon Ish. Only one other person was in the room with them, Yitzchak Navon.”
That is not true, and it obvious to anyone who bothers to read the articles you reference. (Unless you are referring to a recent article in Haaretz, which any intelligent individual knows to dismiss as made up bunk)
All the articles say that at the time these articles were written (in 2011-2012) Navon was the only attendee STILL ALIVE, it is clear that there were additional attendees. The supposition that Novon was the only other attendee makes no sense.