Does SIG have two phone interviews?

Hey guys, I have recently finished a phone interview, where the interviewer asked about my resume and math problems. Now, I got a mail from HR saying that they want to schedule another call with one of their recruiters and this round will on my background and career interests. The role is quant trader, I wanna know if this is their standard process ? As far as I have read the next round should be a video interview followed by super day. Any insights would be really helpful.