Interesting too since Twitter makes all tweets public, thus an incognito window could still see those tweets. Which means that it's more about account notification and other tweet prioritization "features" of the platform that are related to getting news/information.

If this is the case, what does this mean for twitter's algorithms in deciding what to show you first - a democrat you follow or a republic you follow that both talk about a topic you care about (for example cotton picking in Texas)... Would this by any chance have an effect on that?