Clone is not required, considering the different connections for different caterences like TEN ED, NCJ CSMT, NCJ CBE etc...
Regarding timetable, ideally with slight alterations to other timetables, guruvayur Chennai with sf upgradation can be:
GUV00:15 TVC06:10 MS20:15, MS09:00 TVC22:30 GUV04:55