Hi. I easily googled "two-part greeting". Now I know it's about the greeting at the drive thru in McDonalds when you want two McDoubles. Wait. No. That can't b

Hi. I easily googled "two-part greeting". Now I know it's about the greeting at the drive thru in McDonalds when you want two McDoubles. Wait. No. That can't be it. It's about two critiques in drive thru greetings. Wait. No. That seems irrelevant as well. It's a Yuletide thing? Answering the phone? Wait. It's not easily googled. It's an obscure term of art apparently.