Found this in the wake of #4606
I believe that await-connectivity could mistake core segments for up segments (i.e. assuming that only up segments could be found). It still makes the optimistic assumption that down segments are registered
immediately after up segments are obtained. We have to be content with that because in hidden paths test cases the down segments cannot all be found via a simple REST API query.
jiceatscion
commented
2 months ago 
Found this in the wake of #4606 I believe that await-connectivity could mistake core segments for up segments (i.e. assuming that only up segments could be found). It still makes the optimistic assumption that down segments are registered immediately after up segments are obtained. We have to be content with that because in hidden paths test cases the down segments cannot all be found via a simple REST API query.