Callback from behaviour playable vs playable Director (best approach)

Unity Engine
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1

Hi.
For timeline clips timing interaction, should I collect information in the Playable Director all at once or getting Callback from the playable Behaviours itself. What is the best approach in terms of reliability and performance?

2

Basically I want to know if I should use process frame from a track playable or get playableDirector.Time from monoBehviour script and use it with standard Update method?
( i want to trigger things relative to clips but with special conditions)

Does it make significant difference in terms of timing precision and reliability?

Please, Is there any Unity Dev who knows about Timeline or a specialist that could answers me? (because the architecture will be quite different)