HOW LONG DID YOU HAVE THE CARD?
WHEN DID YOU ASK FOR A CLI FROM NFCU?
WAS IS INSTANT, HARD PULL, OR SOFT?
WHAT WAS YOU SCORE?
I believe all of your questions can be answered here:
I had Card for Exactly 2 months. I asked for a line increase and my Card went from 16k to 22k, Instant and I have not seen a hard pull on my report from that. So Im guessing it was a Soft. My score is 698 according to Myfico.
If you can wait that long, most people get auto-CLIs on Navy Fed cards after their first year (13th statement) and at 6/12 month increments afterward.