I was trying Tribeswoman on Tunnel wall at the weekend but was struggling with the crux finish of Railway Children. From where the two join I was going to the spiky crimp with left hand then to crappy gaston layaway with right then into goodish layaway with left then outside edge for right foot and then a powerful move up right to slopey crimp. This way seemed very powerful when tired from Tribeswoman. I have done Railway Children many years ago but cannot remember if this is the easiest sequence?