‘triangulation’ is a method used to manipulate people where information is misrepresented or withheld, arousing suspicion - and disrupting relationships.
Jon sometimes has the tendency to interrupt and go on long tangents, but here he really gave a lot of room for Mike to talk. Mike sometimes tends to clam up, but here he freely himself introduced the issue of G.Armstrong and the police and went on to explain the situation.
Overall, both were "on their best behavior" and the interview was one of the best I've seen on Atack's channel.