I found this but doesn't confirm if its a DAS or not. Just that LTE is live in that section. AS far as them trying to negotiate to get LTE live every where in the station it still hasn't happened. But its still only been 11 months since Craig-s said that and he mention it taking a year.
Its an underground train station that opened around June 2017. I guess it could be a MM or SC but in all my experiences DAS systems show up as MM on SCP. That how it is in JFK and LGA airport.
edit: its the west end concourse of penn station.
I'll have to check. My track got called right after that speed test so I didn't have time to test. Since its only 2xCA with 64QAM I almost hit max speed. which I think is around 238Mbps if I remember correctly