Hi, just a comment because I have some doubts about the configuration of the Q&A software.
I posted a question https://answers.ros.org/question/307822/ros2-and-custom-mutexes/
Then, if I remember well, I just edited its topic or at least it looked like that. It caused another question to emerge https://answers.ros.org/question/307823/can-mutexes-block-an-executor-in-ros2/ with the same contents but with a different topic.
One of these questions got [deleted], the other [closed as duplicate], and in the meantime a very valuable answer disappeared. Fortunately, I had read the message before, but possibly someone other would also find it useful.