After applying online, I got a link to OA, and after a few weeks, I got an invite to an hour long 1-1 interview (virtual). We introduced ourselves very briefly and jumped right into coding. I was given a link prior to the interview, where the interviewer can see my online IDE, so he copied and pasted the prompt into the screen, and I started coding from scratch. After completing a part of it, he would build on the problem and ask to implement another function that does more than the previous one I implemented.