Temporarily relationship in communication
What is the relationship that two people form when they are communicating called? Let's imagine that you meet someone on the street and have a brief chat. What is that synergy called?
Solution 1:
To emphasize the unexpected and relatively short aspects of such a meeting would be that you "encountered" somebody.
[Merriam-Webster]
encounter
transitive verb
: "to come upon or experience especially unexpectedly"intransitive verb
: "to meet especially by chance"