The travel times are horrendous in the West. 19 hour marches between regions is forcing us to spend a day and a half just marching and delaying travel to try and get everyone to arrive on time.
Ah dwilight... Move one region out of your realm and your knights are already homesick
Yeah, the distance between regions is WAY bigger. Thus, high travel times. You can compare it to different islands if you'd like. This is also why wars require a tad more strategic finesse and why homeland advantage is actually a thing on dwilight. Gotta learn the fast routes or you're going to be moving slowly.
If it is the fast route, well, I hope your roads get repaired... If the roads are good... Oh my... Just go around
... If you can't... Well... Have the slowet nobles move early? Make them literal vanguards and they'll be at the very least half a day ahead? If necessary, make them a full day ahead?