On the topic of combined actions then, my preferred way of dealing with Laurion base at one point was to take out a full power cell from the rover, collect outdoor supplies, go inside, charge the base up, shut down systems, go back out (with a powered door), park the rover, install the generator at the base (faster than taking it in through the personnel airlock), install the water recycler in the parked rover (faster than taking it out through the personnel airlock), add fuel to the base generator, and reattach the now-empty power cell as the rover recharges from the base.
The only combined action available in this sequence is just the outdoor collection. There exists a combined action for infrastructure installing with taking things through the airlock, which isn’t my route. Training power cell attachment is probably more useful long term than a potential few seconds shaved by first bringing the generator in directly (the immediate difference isn’t large).