So I would disable feeds, groups, channels and ideas from Connect. Streamline it. Use it as a "static" information hub with manuals, links to all apps you use, phone directory (people) and whatever else you might need that is static. Have it setup as the starting page in the browser where applicable.
Trying this, but can't find where to disable.
Try settings on the right top edge.
Should look like this:
I haven't tried which options can be disabled and which cannot.
But under Apps & Features there are some options: