[Lorelai walks through the lobby talking on the phone]
LORELAI: Hi Mr. Rygalski, it’s Lorelai Gilmore.
Amy Sherman-Palladino’s friend Helen Pai is married to a man named Dave Rygalski. Later on, Lane (based on Helen), has a boyfriend named Dave Rygalski. There may be a hint here that Mr Rygalski at the bank is Dave’s father.