After more research it seems that if you want this in an automated fashion there is only one way.
Koreader -> Readwise -> Evernote
This way will allow you to export all annotations from any ebook pdf to Readwise which will then send to your Evernote.
Koreader USED to be able to directly export to Evernote but it seems Evernote API change couple of years ago put an end to that.
Another option is
Readwise -> Evernote
This is using the default built in reader. The limitation here is that it will ONLY work for official Kobo store purchased titles and not sideloaded content. October, a companion app, would allow for some sideloaded but then it's back to cable plug in....
Last option is
Manual methods
These involve manually exporting your annotations via plugged cable to your PC and then from there kobonotes/October/Ko highlight export plugin, to further process it into Evernote.
Koreader also exports to html, markdown, text. Which you could then manually try to import yourself into Evernote.
Not automated.
Not truly wireless.
So the only wireless and automated way seems to be
Koreader -> Readwise -> Evernote.
One would need to pay $8/month for Readwise to be able to use the export to Evernote feature.