Flat raided by police where Barcelona terror cell ringleader had been living

The transcript involves a series of interactions starting with a question about when someone left a flat. It proceeds with an acknowledgment of presence and readiness to continue. The conversation then moves to a decision-making moment about whether to proceed, followed by a verification of truthfulness.

What could be the reason for asking 'Do you want to go again?'

What is the significance of the question 'Stop. True or not?'