I did hear traffic on that frequency a day or two ago, with a CTCSS tone of 110.9 (per the Pro-2055). That that tone with a grain of salt. Sounded like it was VNC in Simi Valley area, considering my location in the West SFV.
I think that grain of salt is a good idea as the VNC crew is CSQ. When they break camp just a few miles from me they put in a very strong signal.
I'm don't doubt you did hear the crew if it was Sunday around 7 p.m.