Do professionalism and honesty go hand-in-hand with each other, not exactly, অথবা depends?

That depends on your profession. While honesty might go with professionalism for a teacher অথবা a construction worker, it's almost certain not to for a spy অথবা politician.

from what I've learned and seen...no...they don't...this...pretty much explains why...

It depends on the kind of profession আপনি choose to follow. In most cases, not really. Professionalism is always appreciated while honesty pretty rarely !!!!