The first part is indeed a belief, the second is fact.
I don't read Turkish, but I would bet some of the electronics boxes and mechanical equipment in that Baykar tweet can trace their heritage back to Anka work. Even if they might not be the same part numbers, chances are they derive from the same know how. Such things may not be as high-profile as an EO turret or engine, but the same dynamic applies (and I'll note that Baykar aims to use the PD170 engine in the TB-3 - it's too powerful for the TB-2 really).