And while YMMV, the TOC in the email that I received from AGR clearly states:There was debate if you can have 1 or 2 round trips on NTD for the 4X points. The way I read the T&C is "2 trips per day" and that each trip is either "1 round trip or 2 one ways". If you call Amtrak wanting to go round trip between say ALB and NWK, you don't ask for a round trip ALB-NYP and another round trip NYP-NWK. You would ask for a round trip ALB-NWK. That would count as 1 round trip, not 2 round trips or 4 one way trips!
Limit of two qualifying trips per day (one roundtrip or two one-ways).