Navigation questions

Hey everyone. Two questions.

1) If you plot a course to a waypoint in the "walk" activity, it draws a straight line. If you do it in the "hiking" activity - it's a proper route. All map and routing-related settings are the same, the map is the same. Is this normal?

2) Is there a way to do turn-by-turn navigation with alerts before turns if launching navigation towards a waypoint on the watch itself, not by creating a course in advance?