"These propaganda sessions for Putin" is a false are decidedly pre-staged propaganda comment typical of mass media PR=B$, sounds like it means something until you stop to think about it, something that propagandists never want you to do.
Let's look at the reality. Ask yourself should you be given the opportunity to publicly question Putin publicly live on TV would you say yes or no, obviously a person of Snowden's courage is not going to say no to that challenge. Now Putin knows full well that being challenged by Snowden publicly will work well for him, if Putin is capable of articulating himself well against the challenge, for a political representative it demonstrates confidence, skill and self control to the electorate, all vote winners.
So the interview occurs, the reality only an election show piece if the politicians is not an empty talking suit reading off a Teleprompter. Now how many US politicians would be willing to stand up to potential detractors on live TV, would Uncle Tom Obama the choom gang coward puppet of the corporations stand up to Snowden, nope, reality Snowden is permanently barred from returning to the US under the threat of sexual humiliation, torture, extended imprisonment and murder, they are that afraid of him.
The biggest tools in the shed have always been politicians owned by outside interests and what makes Putin more interesting is that he is definitely not owned by outside interests and is not just a puppet reading off a teleprompter like so, so, many US politicians (remember puppets will always have difficulty taking on public challenges because it give no opportunity for their masters PR agents to provide the answers).