I'd be surprised if they did it. Where I work we get a lot of subject access requests and we will generally try and get out of it if we can as it's an annoying thing to have to do. Lots of people know this and put in requests just to piss us off (which I find amusing).
I have submitted a gdpr request myself (UK based so it applies) but not heard back yet. Think they have 28 days though so should get it soon.