No, it's not included. The price for this section is 14,20 CHF (often available for 7,20 CHF if pre-booked on SBB page).

Full price ticket from Chur to Flims is 14.20 CHF, you might be able to get it cheaper with a Supersaver ticket if you reserve in advance.

If you want to save a bit of money, you could take the train a little further to Reichenau-Tamins, and get the bus from there. Check the timetables carefully - it’s a 15 minute walk over the river to the bus stop at Tamins Unterdorf, although other buses do go from closer to the station.

thanks very much all helpful