For the largest part of the route between Stockholm and Malmö, there is only one physical rail route [1], so yes. There is a small difference in journey time (~

For the largest part of the route between Stockholm and Malmö, there is only one physical rail route [1], so yes. There is a small difference in journey time (~4h30 vs ~5h00), but the companies depart within minutes of each other at times (e.g. Apr 18: SJ departure 16:24, Snälltåget departure 16:28) One error I made is that there are only 2 operators: SJ and Snälltåget (MTR operates to Gothenburg, not Malmö). On the route to Gothenburg, the journey time is equal (~3h00), and again the companies depart within minutes of each other (e.g. Apr 18: SJ departure 12:33, MTR departure 12:43), and again there is only one physical rail route linking the cities [1]. [1] see https://www.openrailwaymap.org https://www.openrailwaymap.org