>>“happenstance innovation in the hallway” is a myth perpetuated

hmm I experience it every day, where I over hear something in the hallway that another team it working on, that impacts my team.

This is especially true for IT depts who are often the last to know about something when they should be included from the Jump...

but sure just deny my 20+ years experience and insert yours as more valid that mine...

I am sure what you experience is true for you, and I am sure as I said in my original comment my experience my not be true for a company that has been WFH as primary for years, or from their formation.

However if you work for a 60+ year old company that until 2020 never had any WFH then just try to graft on WFH, that is going to be an issue