[Grammar] Using "after" before "having + past participle"

[UdAkDev]

Hi, I would like very much to know if there is a mistake in the following sentence. I have a hunch there may be, but I am not 100% sure.

"The film's suspense arises from its elliptical structure, as witness for instance in the sequence of its protagonist trying to contact his friend after having given her number to the police."

The highlighted area is what I am having trouble with.

 

[Barb_D]

Welcome to "Using English."

The "after having given" is fine, but you could also say "after giving" (or a few other structures) with no difference in meaning.

The "as witness for instance ins the sequence of" is a bigger problem. Why so wordy?
... from its elliptical structure, such as when the protagonist tries to contact his friend after having given/after he had given/after giving/after he gave her number..."

 

[Raymott]

'but you could also say 'after given'"
Do you mean "after giving"?