Can one cycle on this shortcut marked as a footway in OSM https://www.openstreetmap.org/way/670616280 ?

It appears on Sustrans maps https://explore.osmaps.com/?overlays=os-ncn-layer&lat=52.887650&lon=-1.507602&zoom=17.8498&style=Standard&type=2d&placesCategory=  as part of Derby circular route 66 rather than using the two side of a triangle in OSM https://www.openstreetmap.org/way/28293574 https://www.openstreetmap.org/way/518529863

Potential discrepancy suggested by https://dent.org.uk/Sustrans/NCN_discrepancies_2022/#19/52.88779/-1.50708 https://qgiscloud.com/smoky/NCN_Discrepancies_UK_Cloud/?l=Sustrans%20NCN%2CSustrans%20RCN%2CSustrans%20Links%2COSM%20Discrepancies%2CSustrans%20Discrepancies%2CReclassified%2CRemoved&bl=ocm&t=NCN_Discrepancies_UK_Cloud&e=-168159%2C6962060%2C-167270%2C6962546 
