Was the CBS channel premiere letterboxed in 2:1 OAR or 16:9

[jefferiestubes8]

For those or watched the premiere on CBS network linear channel :

Since it was made in the 2:1 Original Aspect Ratio (OAR) for CBSAA I was wondering how it aired on the CBS network?
Was the CBS channel premiere letterboxed in 2:1 OAR or 16:9 with no black bars at the top & the bottom?

CBS has allowed us to find a cinematic language that’s wider in scope — our aspect ratio is 2:1 — and it just lends itself to a very lyrical way of telling the story.
http://trekcore.com/blog/2017/06/star-trek-discovery-filming-in-21-aspect-ratio/

 

[Campe]

From what I recall, I'm pretty sure it was 2:1.

Also, IMDB suggests as such. (Yes, I know the data there is based on user information.)

 

[Tuskin38]

It airs in Canada in 2:1 as well.