But it must be Tuesday and Thursday surely. There would be at least 2500 away fans from both clubs. Being Portugal and easy flights the fans will book three days. Meaning 5500 away fans in Lisbon on the Wednesday evening/night unless it was Tuesday / Thursday.
We will know at 22:00 on Thursday 22nd if, as expected, both teams from Lisbon get through to the knockout stage.
In which case, both teams would be at 'home' on the first game, something that couldn't happen.
With the draw on Friday UEFA would have had 12 hours to decide what to do. I say 12...