Well, thank you very much. My intention was only to visit and inject a comment in order to have people look at the evidence on TTSS relationship to flagella. I got involved with a friend and so I stayed a bit longer than I had intended. Moreover, it allowed me to review the information I had read on the subject(some, I can't find one fairly important one). You might want to look at this one
GENOME EVOLUTION IN BACTERIAL ENDOSYMBIONTS OF INSECTS in light of this statement
Second, the suggestion that a simpler system (TTSS) is derived from a more complex system (flagella) is quite odd in an evolutionary context since it runs against the progressionist grain that pervades evolutionary thought since the days of Jean-Baptiste Lamarck. from another citation on this thread.