I just did set up a channel for a certain hashtag I wanted to observe. There is at least one actor using this hashtag and there have been two posts with that hashtag the last two days. The contact in question is set to be displayed channel-only and also has frequency set to display all posts of this contact. Even this way, however, I only see one of these two posts in that channel. Is that to be expected? How to debug what's going on? Channel configuration on that instance is set to contain stuff from the last 120 hours so these two posts should definitely be in there.