ET caught up with Jamie Dornan and Anthony Mackie ahead of their new film, ‘Synchronic,’ in select theaters and drive-ins on Oct. 23. Mackie talks about being in quarantine in London as he and Sebastian Stan return to the set of their upcoming Marvel and Disney+ series, ‘The Falcon and the Winter Soldier.’ Plus, Mackie opens about the recent passing of Chadwick Boseman, sharing his heartwarming memory of the first time the two met.