Outside the wall on the other side lay the royal forest.
Coram led the way to the courtyard beside the stables.
Notice how these sentences only have 1 verb group, which means they only describe 1 event.
Someday she would wear armour too, but she wouldn’t be confined to temple grounds!
Alanna gritted her teeth and thrust her chin forward stubbornly.
If you split these sentences at the connector (but, and), you end up with two distinct events in each.
Here the Market Way changed its name, becoming the Palace Way.
“I’m come with Master Alan of Trebond to begin his service at Court.”
These ones are a bit trickier—the events aren't as clearly entangled as the Bod and Scarlett example—but if you think about it, each sentence has one event that is expanded on in more detail.
- The Market Way changed its name (and here's what it changed its name to).
- I've come with Master Alan (and this is why).
Can you see how this is subtly different from the distinct events in the compound sentence examples?