They do. It’s one of those routes where it can be very easy to grab a J seat depending on timing. I think they cut down at least one frequency to B6 , but I want to say it is coming back for the spring / summer.

BOS-ORD E175 Sunday evening - cleared at the window, and we went out with one seat open and a light load.

ORD-DFW 789 (!!) Monday evening - I had previously cleared at the window on the late flight (looks like it went out with a few on the list), but SDFC’d to this flight. Flight went out with ~35 on the list. The 789 was a nice surprise and good for the two hour flight.