From someplace in my memory bank, I recall a very realistic dream asking a Sasquatch why it does not like to be seen by humans. . The answer back was that "it is not permitted". That makes me wonder if human contact has been so bad and even deadly for them because of disease, that they have sort of a universal rule to avoid human contact. From the footprints, the ones that have interacted with me are older juveniles; teenagers most likely. While they never showed themselves, they got very close at times, close enough to throw small pebbles and hit my pack to let me know they were there. Like human teens, perhaps they press boundaries and defy rules set down by their elders? Unlike bears, Sasquatch seem to have at least mixed sex family groups. If they have that, they could have tribal groups with sets of rules. Certainly with rules, human contact protocols would likely be a big part of that.
While I have not had contact in quite a while, I presume that your exchange was conversation. Along those lines, I evolved into talking to them when I thought them present. I figured it did not hurt anything and even if they could not understand me, talking to them showed that I wanted to communicate. Some among us have spread the myth, that with time, acceptance and trust, they eventually show themselves. That never happened with me. My recent habituation contact has had repeat close contact in a camping situation but they have not revealed themselves intentionally. His sightings have been limited to glimpses of them moving to cover to hide when he emerged from his tent at night, and one longer road crossing in front of his vehicle. They seem to have very strong marching orders to avoid being seen.