Checkride: to talk or not to talk?

It has been said that on the oral portion of the checkride, you should say only what you need to answer the question. If you say too much, you might dig yourself into a trap the DPE could exploit.

My question is this: on the flight portion of the checkride, should you be talking, verbalizing your actions, or keeping silent? Verbalizing your actions allows the DPE to gauge what you're doing and how you're making decisions, and helps him evaluate your thinking and analyzing skills as a pilot. But, you can also trap yourself, much in a similar way to the oral checkride.

How much talking during the flight is too much?

Thank you.

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