Looking for information and a way to improve the situation I found that the #nexdock360 can only deliver 5W 5V/1A https://nexdock.com/support-nexdock-360/connecting-other-devices/ which isn't enough to run the #Librem5 https://forums.puri.sm/t/librem5-does-not-charge-through-nexdock360/16977/12?u=chrichri . For comfortable headroom for charging I would need 3A. Using a usb-c dock with hdmi and usb-c (keyboard/touchpad) connection to the N360 seems to work and keeps at least the charging level of the Librem5.