Any advice as to whether this is feasible to do in one day from Matsumoto would be appreciated. I am not sure how much time we need to wander around Magome and Tsumago. I don't have enough time to be able to stay overnight in either of these places so trying to make the most of them in just one day.
7.04 train from Matsumoto to Nakatsugawa arriving 8.21
9.10 bus to Magome
Spend some time wandering around Magone and then do the 3 hour (approx.) walk to Tsumago.
Spend some time wandering around Tsumago
Either the bus or a quick taxi ride to Nagiso station
16.00 or 18.21 (probably the latter) train to Matsumoto