From what I understand, recast/detour supports off-mesh connections.

http://digestingduck.blogspot.com/view/f...-pt-3.html

It would be great if EE could expose the interface so that we can specify off-mesh connections to be used during pathfinding. I'm in desparate need of this for my current project to allow agents to take into account points at which they can cross an unwalkable section of the navmesh when pathfinding.