Ladies: How do you perceive a man who takes an especially long time to finish?

A little backstory;

just finished hooking up with this girl for the first time. She went down on me for a good 20-25 minutes before I came in her mouth. Afterwards was fine, but she made a few offhand comments after the fact like "Took you long enough.." (jokingly) etc, and she asked if that was how long it normally took me to finish, the answer being yes.

So my question is, how do girls perceive the time it takes for a man to finish? Like, is there a negative connotation to finishing after a good amount of time (in regards to head and HJ's)?