User blog comment:JailorWitch/I have a dumb question that involves mechanics./@comment-45.50.100.114-20180914044112

I think they would attack eachother, resulting in both of their deaths. Since the crusader kills one visitor, and that visitor is ambusher, the crusader would kill the ambusher, and vice versa. If there is another visitor who visited the same target, then there is a chance that the crusader and/or ambusher would not die, since they are able to target the other visitor(s).