May be they don't need. I've seen too many MST and GS pax board sleeper class in a late running GKP-LTT spl. Looks like they are at the stations all the time. Enjoying the IR amenities at stations while waiting for regular trains. Surprisingly TTEs are ALWAYS absent on such trains. May be CRIS should develop an app to trace/contact your TTE and/or RPF on board to avail peaceful journey without disturbance of such pax. At least on spl trains where fare is Tatkal.