Yes.
You can connect as many Sales Navigators as you want to Evaboot.
Evaboot uses your Linkedin cookies to connect to your Linkedin account and export the data you need.
You must stay logged in on Linkedin while Evaboot is exporting data. If you log out of an account while Evaboot is working your export will fail.
What if I need to export from several Sales Navigator accounts at the same time?
If you need to use various Sales Navigator account at the same time you can use different Chrome sessions to connect to different Linkedin profiles at the same time.
Here is a tutorial: