For sure!
1) Case history the “We reached a decision in your case. You should expect to receive the decision in the mail shortly.” So yea basically what you wrote about the status, it changed from decision was mailed which was mailed to me around 6am early morning and they took one day to change it to “fees are waived” which happened at night PM. You mentioned something about them sending case status at am and pm. And you are correct sir!
2) Well I don't really know I’ll a check . But I never got the chance to check my record status before my interview so I’m not really sure if this can prove one of your theory but I’ll ask someone who is in the same case whether they can see their travel record. But again I did my search and our record shows no record found so we’re all good!