Comma Between Two Verbs in a Compound Predicate

Don’t put a comma between two verbs in a compound predicate. There can be more than one verb in a predicate.

Mark despaired both finding a job, and having a decent place to live.

The verbs in this predicate are finding and having. There’s no need for a comma to separate them as it separates having a decent place from Mark despaired.

Flowers and candles can pleasantly decorate, and scent a room.

This sentence doesn’t require a comma, either.

Have you read Sense and Sensibility, and seen Pride and Prejudice?

This sentence doesn’t need a comma because the italics clearly identify the conjunctions which are part of the titles.