Well, calculation works depending on used and available setting.
Edit - All the thing has 2 aspects
1/ How to get to some point, Navigation calculates the route, Guidance aims there just by straight line.
2/ which point it tries to reach - it mostly depends on seting how to behave if you are off the track more than a threshold distance. Strict route following tries to pass every point of preprepared route.
In the PRO - if recalculation is activated and if you left the route
it recalculates route to final point or next via point in case of point priority,
or it recalculates route to reach the route again, if route priority is selected.
You can - in both navigation and Guidance - use in advanced settings Stract navigation along the route.
Edit - All the thing has 2 aspects
1/ How to get to some point, Navigation calculates the route, Guidance aims there just by straight line.
2/ which point it tries to reach - it mostly depends on seting how to behave if you are off the track more than a threshold distance. Strict route following tries to pass every point of preprepared route.
In the PRO - if recalculation is activated and if you left the route
it recalculates route to final point or next via point in case of point priority,
or it recalculates route to reach the route again, if route priority is selected.
You can - in both navigation and Guidance - use in advanced settings Stract navigation along the route.