Great show and two 'legends', really enjoyed it!
But be a bit careful of accepting everything that's put forward in the show. The tapes and claims (re 'missing cosmonauts') have been carefully scrutinised in light of prevailing Soviet space technologies, deficiencies in the brothers' own technology and declassified information relating to the period, and there are some serious discrepancies. Google "missing cosmonauts" as a phrase and you'll find heaps on this.
Cheers -