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As you probably know, NFCU is HP happy. I would call and speak with them; they have great customer service as you also probably know. Explain the situation and ask if balances can be combined (assuming they approve the new card and don't really want another one).
Based on the NFCU data thread, you'll likely be approved for the second CC. If you haven't already, check that thread out...lots of good data there. Author by credit addict.
A person by the name of Creditaddict started a thread on NFCU CLIs here in the credit application section. Its long but well worth reading and following. Creditaddict is the expert on all things NFCU and has led many of us to the promised land.