Per #TAAG2022, effective Oct 01st, #12163 to depart from CSMT.
#12163 to depart from #CSMT instead of #LTT, swapped TT with #22159
Similarly, #22157 to depart from LTT, swapped with #12163
And...
more...
#22159 to depart from CSMT itself but change in time, swapped with #22157
No changes at Chennai end.