difference between Step and Sample in Dagger

[lwizard1999]

I am using Dagger, but I do not understand why, when I asked for 10,000 steps with 1 environment, I get 6 trajectories and more than 48,000 samples (4 rounds).

If I ask for 10,000 steps, shouldn't I get 10,000 samples, or perhaps a few more?

Furthermore, with only 3 trajectories, we end up with something like 12,036 samples in one round. Why is the algorithm attempting to generate more samples so?

"
dagger_trainer = SimpleDAggerTrainer(
venv=env,
custom_logger=new_logger,
scratch_dir= r"C:\Users\user\Temp\dagger",
expert_policy=expert,
bc_trainer=bc_trainer,
rng=np.random.default_rng(),

)

dagger_trainer.train(10000)
"