justafan wrote...
Instantaneous communication in Mass Effect is achieved in one of two ways. First are comm bouys that either use the relays to transmit instantaneously to another buouy in a desired system. The other form is Quantum Entaglement, which is a two way only form of communication. It is highly unlikely the Quarians would have access to a buouy that can transmit to geth space (assuming all weren't destroyed in the war) and a QEC requires coordination to set up, not something woring states will do.
As for investigating, that is impossible unless they find a way to contact the geth (read point one) or send a stealth ship into geth space (which they don't have) and sending a stealth drone would require resources they can not spare in a suicide mission assuming they could build it in the first place. Basically, their only option is to troll the extranet and hope the geth respond, otherwise they have no way of communicating or investigating. Also, an imminent Reaper invasion doesn't leave much time for investigating a seemingly weak claim.
Sorry, it just stretches the bounds of credibility that there's no way for the quarians to get a "Hey, want to talk peace?" to the geth. Just send the signal/message through the relays, which do connect to geth space and which the quarians certainly have access to. Shepard gets emails from quarian officers in ME2, so they must have access to the galactic communicats channels. Just pipe that into Rannoch and wait and see. At a minimum the quarians could use old communications protocols that they can be pretty sure the geth are familiar with.
Or, just drop a drone through the network and start broadcasting via radio.
Honestly, this can't be that hard for a society that invented AI and was a council race 250 years before humanity became interstellar. Communications barriers just isn't a valid claim.
Investigating can come after communications have been established.
"Can we have our planet back?"
"Maybe. Do you really want peace?"
"We want a world, we're dying up here. Look, you don't use it anyway. Pull your fleet out and just go hang out in your sphere. We promise we won't attack."
"Ok, we'll pull our fleet out, but you can only send in your civilian ships. Both of us keep our warships at least a jump away from Rannoch."
"Etc., etc., etc."
As for believing the crew, the quarian admirals appear to have been willing to listen to what they said about the geth dyson sphere, to the extent that they targetted and destroyed it first for maximum geth casualties. But hey, that was third-hand hearsay that was worth investigating and acting upon because it helped to win the war, not like that crazy talk of possible peace, which isn't even worth exploring!
And by and large, the quarian gov't was utterly insensitive to the reaper threat until Shepard physically dropped in on them.