Hey Sunshine!
I'm in a similar position, passed viva with minor corrections. I submitted my corrections first time a month after, but my internal only replied to me about 5 months later, saying he wanted to see more!!! So I had to resend the thesis with the corrections (that was about 3 weeks ago), and he has yet to respond. My case is more of an extreme than the rule, but it could take them a few weeks to respond. Didn't they tell u in the viva who will check? I was told it would be only the internal. Anyways, I suggest you do what I will do. I agreed with my supervisor if he doesn't come back end of next week I'll send him an email, and if he still doesn't respond, then I'll contact the graduate studies office. I say in your case, wait another 2 weeks before sending such an email to both examiners.