To me it sounds as work in progress for the schedule to Groningen. I expect the original departure time to Groningen to change to Rennes. This way both could become double daily.
1 GRQ-SEN-GRQ-SEN-ANR/CFR-SEN-MAN-SEN-GRQ
2 SEN-MAN-SEN-RNS-SEN-RNS-SEN-MAN-SEN
Just a guess...
Last edited by koninckske; 25th Oct 2017 at 06:17.