Comment edit cutoff time for moderators

Do moderators have additional privileges to edit comments after the usual 5 minute cutoff?

I ask because in the following question:

Double Slit Experiment: How do scientists ensure that there's only one photon?

I could have sworn that Qmechanic's original comment was "possible duplicate," which is why I had responded that I didn't think it was a duplicate. This makes my response comment look rather silly, but I'm mainly curious because it's bothering me that my memory is failing.

• Also, note the little pencil icon next to Qmechanic's comment. When a comment is edited (by anyone, not necessarily mod edits), that will show up. Sep 4 '13 at 17:10