HT Zone interview questions

Initial call with a recruiter with basic questions about where I work, why I am looking for a new job. She said a few words about the company and then scheduled a video call with the head of R&D. The call with the head of R&D was okay. We went over what he was looking for and where the company stands in terms of tech and the R&D team then he said he would reach out to me in 1-2 weeks about a home assignment. It's been 13 days and I hasn't heard back yet.