aww yes right lol
when i look up that is what i can see (general)
Those aircraft are most likely on the ORW3 arrival into Boston and are speaking with ZBW (Boston Center) on 124.85 or 133.42 or are talking to A90 (Boston Approach) on 120.60.
It depends where on the STAR they are. Most of the time, these aircraft are being handed off to Approach between ORW and PVD and are given the crossing restriction of PVD at 11,000 and 250 knots. From there (PVD) they either remain on the STAR (to INNDY intersection) or are vectored off it to the approach being used at Boston.
Hope this helps,
Jason