That is true. Note what I said previously
and this is an example of one of them. From memory, when topics were merged on SMF then each post retained its original title, but I may be wrong.
In any case, the forum search does not just work on topic titles so anyone searching for "measuring performance" would find this topic. To make the contents of the merged topic more obvious I suggest that its title be changed to "Measuring BLE Performance / Serial.flush() blocks forever on Nano 33 BLE Sense" so that its subject matter is reflected by the title