Guys let's suppose I let users use chainlink to request a random number, what's the most convenient way to listen to when their request is answered and display them the number?

you mean in frontend? using javascript?

Yeah, I can emit an event on the "callback" but then I just listen to that through web3 or are there other options?

i normally send the transaction, put an spinning circle with a message until the transaction has been mined and has enough confirmations and then i remove the spinning circle and show the value

i normally use ethers instead of web3 so the snippet would be something like

setLoading(true) // popup spinner
let result = await contract.method()
setLoading(false) //

show the value or whatever

Yeah but in this case imagine the flow as: you call function A, you have to wait B to call function C

And when B calls C you display to the user the result of the call to C

On fe we can't know when the call to C will happen (but it's expected in a reasonable time), and idk if I can open a wss connection for each user that needs to wait for a result