Lufthansa will no longer fly between Leipzig / Halle and Frankfurt am Main in the future. Instead, they rely on a cooperation with Deutsche Bahn. There should be special areas in the trains between the two cities.
In a TV report by Mitteldeutscher Rundfunk, the company stated that this had been planned for some time, but that the Corona crisis had now accelerated implementation. The model will definitely catch on, as there are other domestic connections that are to be shifted to rail.