Let $f$ and $g$ be transcendental entire functions.

It is known that
many dynamical properties of $ f circ g $ are

very similar to the
dynamical properties of $ g circ f $.

We show that this is not so
with regards to its factors $f$ and $g$,
if taken individually.

We
also give an affirmative answer to a question of Baker

that
permutable transcendental entire functions have the same Julia set.