Are Natasha Lyonne and Fred Armisen Dating?
08/26/2014 AT 03:10 PM EDT
Stepping out at Netflix's post-Emmy celebration at the Chateau Marmont, Natasha Lyonne and Fred Armisen "shared kisses and were very cozy together," an onlooker tells PEOPLE.
The Orange Is the New Black star, 35, mingled with her costars at the bash – including Taylor Schilling, Dascha Polanco and Laverne Cox – but Armisen, 47, was constantly by her side.
The Portlandia actor was most recently linked to his fellow Saturday Night Live cast member Abby Elliott after a brief marriage to Elisabeth Moss.
Reps for Lyonne and Armisen have not responded to requests for comment.