The ALEX train sets have a long layover in Lindau. A departing set passes in next incoming set soon after getting off the island; I filmed two passing each other on the main line by Lindau-Aeschach. This gives them just under two hours platform occupation at the Hbf.
The Munich to Lindau/Oberstdorf train splits/joins at Immenstadt. The split train can consist of 2,3 or 4 coaches.