Here are the bus timings from Hyderabad to Chennai Bus Timings by RTC:
1326
MBXR- CNI 19:15 → 07:00
Duration: 11 hrs
GARUDA PLUS (VOLVO / BENZ A.C Multi Axle)
Via: MLG,OGL,NLR
1358
MBXR-CNI 20:00 → 07:40
Duration: 11 hrs
GARUDA PLUS (VOLVO / BENZ A.C Multi Axle)
Via: MLG,OGL,NLR