No.
Streams are not “scheduled” and recieve a specific URL like you do on YouTube.
Pick an ingest and just go live.
additionally no, you cannot determine the ingest a given stream is using.
If you are the streamer you can know via inspector - (https://inspector.twitch.tv/) or the fact you know from putting a given URL into your streaming software.
There is no way to get what ingest someone else is using.