No matter what you have read on the internet about whether or not your application is read by robots or by humans or whether anyone reads a cover letter or whatever else the internet is telling you: If the job ad asks you to send specific things, you should send those specific things.

Somewhat related: For the next six months, I will still be screening resumes for a large class of open positions where I work.

Bright side: Today I received an application that included all the things!