The listed range under the specifications says the range is 380 miles. That’s a far cry from transatlantic - I wonder what caused such a big difference between intention and reality.
Also it probably would have followed a flight path similar to the Curtiss NC-4, with refueling stops, leaving the longest leg to be between the Azores and Newfoundland. Still much farther than the range though.
I think even if they could make it work though it would have been awful for a passenger. The cruise speed listed is incredibly slow. NY to London would take almost 2 days of flight time.