Four words that convey all the info, with the first one signaling who you are addressing.
SLs & FTLs are probably busy doing their own thing, if you say stuff like "Can I have FTL, please?" you have three people opening the fullscreen map and tryinig to figure out who "I" was, possibly asking again on Squad Channel, clogging comms. If you directly say Bravo/Charlie the other FTL can ignore the call. If you say [Your Name], they know exactly who to pass it to, making the whole thing a 1 second process.
If you're in Alfa: "SL, (can you give) Bravo or Charlie to [Your Name], please?" By clearly addressing the SL and mentioning both Bravo and Charlie you indicate that you're in Alfa. Why n


