DPE’s will change ‘personalities’ and ‘experience’ levels during flight.
Such as:
-Teach me a steep turn at Private pilot presolo level.
- Teach me a Chandelle, meaning he is now a Commercial student.
- He may feign uneasiness about a certain maneuver such as stalls.
Very common for students to be hesitant.
- He may give you a scenario such as he’s now a 2000hr pilot on a Flight review and you need to critique his maneuver.
So you need to be familiar with all the ‘common’ errors for that maneuver.

This ^^^

Or it’s a completely canned ride and your just going through the motions.
I hope not......but I don’t know the gentleman in question.