Premise:
"Answering these questions requires a constant redefinition of the difference between an argument and a threat."
Hypothesis: There is a perceived difference between an argument and a threat.

yes

Premise:
"This friend of mine will be here presently."
Hypothesis: My friend will be here soon.

yes

Premise:
"especially if you can get find some shade"
Hypothesis: A shade is pretty easy to find
it is not possible to tell