Folks, don't lose hope yet!
It looks like they're still interviewing. There were at least two other interviews that commenced in parallel during my slot. By the looks of it, they were running back-to-back interviews.
Do google V.K Menon's blog post titled 'The gatekeeper at ISB'. It's a great read. It gives some clarity to the criteria the school is looking at, and to the structure of the process as well.
Honestly, it's a bad idea to reach out, just because they'd already be swamped with hundreds of other such mails. And, it won't leave a good impression (unless of course you have legitimate reason to do solve ; Eg: work promotion or other important updates like recognition at work, side project or extracurricular activity)
Also, anyone who wants to expand their b-school search is welcome to have a chat with me. I've extensively researched the same.