Audibility of Gemini Thrusters

In article ,
OM om@our_blessed_lady_mary_of_the_holy_NASA_researc h_facility.org
wrote:
...Which begs the question: considering the positionings of the
thrusters on both the Agena and the Gemini, could the Agena have been
ruled out right off based on the direction of spin?

I've often wondered what a spacecraft cabin sounds like. Can we infer
from the crew's failure to diagnose the problem before undocking that
Gemini's own thrusters were inaudible within the cabin?

Second question, would firing up the re-entry control system have been
feasible while docked, given that the system's thrusters were in the
nose of the crew module and therefore would have been very close to
the Agena?