Did anyone else notice that .......

Michael could have also used the same Travel Agency! that arranged Vincenzo Pentangeli’s miraculous appearance at the Senate hearing

I seem to remember Turnbull posting [or similar] –
Michael wanted to show Roth that Michael didn’t suspect Roth was complicit in the Tahoe shooting and Michael was still looking inwards for the traitor in the family As such Michael couldn’t trust Rocco and/or Neri [of course! All for Roth's benefit!]

Besides Michael turning up in Havana, Roth’s territory, with just Bussetta was to reaffirm to Roth that Michael and Roth’s relationship was still good