Awhile back I got 1 and did 2, but was sent to secondary Passport screening, there were two people ahead of me, but I got out in about 5 minutes. When I asked why I was send to secondary, they guessed it was fingerprint related. I did get an email from GE/CBP asking me to describe my "bad" experience. Did you get a follow-up email?
Have not received an email from GE/CBP yet.
Did you get that email automatically or was it in response to a complaint you sent?