Behaviour Flow Report in GA

Hi -

Anyone familiar with this report - Behaviour Flow. I'm trying to understand user flow through my site. I see at the start of the chart a list of landing pages, then a series of interactions.

- In the first section, the landing pages, 5 or 6 are shown, then there is a big group listed as '23 more pages'. Then I look at the group and there are only 15 pages listed? Seems like there is information missing.
- Secondly, can anyone tell me, is it counted as a 'Drop Off' if the user clicks out of the site on an affiliate link? Or is this just users leaving the site through other ways.

Thanks for any help.

Mark

Google will only display around 15 pages in the listing, these are the top pages and with the drop offs, they could potentially just be leaving the site. If you think it could be due to them dropping off due to the affiliate links, then it would be best to set up UTM tracking somehow on the affiliate links if possible and then compare the data to the drop offs. Just an idea any how. I'm new to affiliates, so not sure if you can find out about affiliate link clicks on the affiliate backend?