It's quite feasible. There are a few approaches. It's common to build lightning detectors with four antennas in a square, which gets you a rough vector to the s strike. That's 1950s ham radio technology.

Synchronizing multiple receivers is common. That's how passive ADS-B locators work.[1][2] This works so well there have been attempts to stamp it out.

[1] https://www.adsbexchange.com/what-is-the-exchange/

[2] https://adsbglobal.com/