Didn't disclose I was interviewing elsewhere until I had a competing offer and I still don't know if that was the right call

Kept both processes completely separate for weeks, worried that mentioning one would spook the other. Only brought up the competing offer once it was in writing, and both companies moved fast after that — but I've since heard from people who disclosed earlier and got the same speed-up without the secrecy. No idea if I got lucky or if the quiet approach actually mattered. Curious what's worked for other people here.