Ikora seems troubled as she lays out the details of Failsafe's plan.
Thanks to the amount of data you've claimed from the Vex, finding the Conductor's coordinates is technically possible, but would require a vast amount of control data gathered from Vex isolated from Nessus's network. This data would have to have been collected over centuries, recorded with perfect clarity, and preserved in the Vex network itself.
"There is only one accessible database with that kind of fidelity," she says grimly.
The mind of Saint-14—the Saint-14 who died in the Infinite Forest and whose body is still held deep in a Vex simulation.
Claiming this data will involve incredible risk, both to yourself and the despondent Saint.
Nevertheless, Ikora says, "Our future may depend on Saint… again."