reifel From Germany, joined Feb 2005, 1264 posts, RR: 1 Reply 2, posted (7 months 4 weeks 17 hours ago) and read 2256 times:
All said above. I would say that generall by foot is shorter if you connect from Schengen to Schengen (unless a bus is coming right away). However, if you transfer from nonschengen to nonschengen and if you want to go by foot you will need to pass immigration possible needing a visa. If you want to avoid that, bus is the only option.