Which activity is NOT typically a part of police interrogation?

Establishing rapport with witnesses is not typically considered a part of police interrogation, which primarily focuses on gathering information from suspects. The interrogation process is more about eliciting information through questioning and can sometimes involve applying psychological techniques to encourage a suspect to divulge information.

Interrogating a suspect involves direct questioning aimed at drawing out confessions or clarifications about the crime in question, making this a core part of the activity. Applying psychological pressure is also a common tactic used during interrogations to influence a suspect's decision-making process and elicit truthful responses. Documenting suspect responses is critical in the interrogation process to maintain a record of what was said for legal and investigative purposes.

In contrast, establishing rapport is more aligned with the initial stages of investigation and witness interviews rather than the interrogation of a suspect, which has its own specific focus and set of techniques. This distinction highlights the primary function of police interrogation as being centered around suspects rather than witnesses.