Thanks for posting that review.
I'm wondering if the writer was using the "20 minutes after he was supposed to be on stage..." comment for dramatics. If the show is supposed to start at 9 pm, all the times I've seen Lindsey, he actually doesn't start until 25 minutes after what's posted on the ticket, so if he walked onto the stage at 25 minutes after what was posted on the ticket, he was right on time.