Some good advice on indoor vs outdoor climbing as well as using feet more effectively.
“The nature of climbing walls - look at the layout of the holds on modern climbing walls. In the main, setters tend to space the holds fairly evenly leading to the sort of position I’m in here, with limbs all at different levels. This makes quite pleasant continuous movement. But keep in mind that a lot of rock types have more patterned arrangements of holds; holds together in breaks with long reaches between and sometimes on good handholds but miniscule dinks for feet or vice versa. If you are training for this, watch out that your regular diet of climbing contains at least some movement like this.”