if you apply for a job via LinkedIn (by clicking on "Easy Apply"), which simply sends your attached resume and your LinkedIn profile to the employer, is there a different expectation of a follow-up? Normally, I'd send an email to the hiring agent or similarly situated individual, but I'm not sure if there is a different expectation on the Easy Apply feature of LinkedIn. Thanks.
There shouldn't be any difference - in fact, one of the benefits of using the Easy Apply feature is that they don't need to provide an e-mail account for candidates to follow-up (so they end up receiving less messages per candidate).
I'm in agreement with Carrdelling - with a follow-up thought..
Personally, I am always impressed when a candidate applies and seeks me out to send a PM via Linkedin. Even if it is to touch base and making sure the application made it my way. This is especially useful when HR departments screen or drop the ball on forwarding over resumes.
As for an expectation - No, not really. These are changing times of how people land a job and it isn't as black and white as perceived.