If you has 1000 hours TPIC at a regional before you got the 737 type, that might be a hint. Of course you could simply lie about when you got the type, maybe white-out the dates on your training record.

If you did it all at once, I would simply tell them that. But a 73 type without experience will probably lead to a discussion about your SWA aspirations...have a reasonable song and dance ready.