What are the dependent and independent clauses in the following sentences?

Question

When the campfire was burning steadily, all the campers sat on the ground around it, and someone began to tell a scary story.

After he had been in the house for an hour or so, he began to hear strange noises, but they didn't frighten him

Answer 1

I'll be glad to check your answers.

Answer 2

When the campfire was burning steadily is dependent

All the campers sat on the ground around it
Independent

Someone began to tell a story
Independent

After he had been in the house for an hour or so
Dependent

He began to hear strange noises.
Independent

They didn't frighten him
Independent

What about the word but in this sentence?

Answer 3

The word "but" is a conjunction joining the two clauses of the compound sentence.

Answer 4

Are the other answers correct? Now I think he began to hear strange noises, but they didn't frighten him is a independent clause (just one and not two)

Answer 5

The other answers are correct. Your last example is two independent clauses.