most people just want "fallout 2 [but better]" (tm)
so that you did actual work
a) didn't impress them
b) probably even scared them (as you say there was silence)
d) at any rate it wasn't fallout 2 [but better]
it is safe to say that these people either are useless or something is wrong here
so the fact that you're ignored actually indicates something, its either chaotic events that disturbing the cooperation or these people simply will ignore everything until its "like fallout 2 but better"
you may not pay attention but since they're in your team its more complex then
probably just ignore that whole thing and/or wait second round of "negotiations" (they tend to understand better second time, when/if it is needed)
in general people are the problem and sometimes you can't blame them for that