Is the Exit button necessary? What does it actually do?

Hello, 

My team wants to include a survey at the end of every CBT. So management created a job aid with instructions to launch the web survey (URL) as the sole action for the Exit button at the end. 

My concern with this is that now the Exit button does not actually perform the action of exiting the course. 

But what is that action exactly? What does the Exit button in a CBT do? Does it report the exam results? Does it officially "exit" the course so that when you launch it again, it does not ask you to "continue where you left off"? 

I actually think that it does do some or all of these things, but am asking for clarification from the gurus on here. 

And if it is necessary to perform the technical exit, would it be preferable to set up an advanced action instead that would do two things: 1) Launch the web-based survey and 2) Exit the course from a technical standpoint? 

Thanks in advance!