That's roughly the same time as Paris-Nice, which is a very heavily used high speed rail corridor. Not enough to make the plane route unviable like it did with

That's roughly the same time as Paris-Nice, which is a very heavily used high speed rail corridor. Not enough to make the plane route unviable like it did with Paris-Lyon and Paris-Bordeaux, but there are drastically less planes now, so it's still a massive net win.