Demi Moore and Ashton Kutcher at Burbank airport in September 2013
Pacific Coast News
09/10/2013 at 03:00 PM EDT
Yes, that really was Ashton Kutcher
and Demi Moore
walking together through California's Bob Hope Airport in Burbank on Monday – while Kutcher's flame Mila Kunis
was in Canada.
Exiting the same flight, Kutcher, 35, and Moore, 50, were dressed casually in sweater cardigans, with Moore sporting leggings layered underneath a dress, and Kutcher in jeans and a baseball cap.
The pair had been attending a tech conference, E! reports
, related to their organization Thorn, which works to defend children against online predators.
According to the organization's website
, the group continues the work started by the Demi and Ashton (DNA) Foundation in 2009.
Kutcher and Moore were separated in 2011
after six years of marriage. Kutcher filed for divorce
in Dec. 2012, citing irreconcilable differences. Since then, Moore has sought spousal support
While the pair are still legally married, Kutcher has been getting serious
with That '70s Show
costar Kunis, who was at the Toronto International Film Festival on Monday night for the premiere of Third Person