The CT Rail line runs up and down the center of CT from Springfield MA, to New Haven CT.

New Haven is a rail hub for commuters. Metro North Rail and Amtrak both can get you into NYC every morning from that rail hub. Amtrak even provides direct service to NYC from points on the Ct rail line, so you don’t have to initially commute to New Haven.

Commuter rail works in the northward direction too. If you were to live in Wallingford, one person can take the train to nyc and the other can take the train to Hartford. Then a daily Uber to their office’s front door.