I've been thinking a lot about MBOs and when they don't exactly happen on my time frame. For example, when I learn a new manifestation technique, I almost always ask for a husband. Everyone in my life knows that I want to get married, that I want to settle down, that I want to have children...and they also know that as much as I want these things, in my heart of hearts, I know I'm not ready. I have things I have to do. I have to learn and grow in different ways. I may I ask for a husband, but if you could read my energy, you would see that there's a part of me that is holding back.
I think it might be similar for the individual who didn't truly expect for their MBO to happen on their time frame. I don't think that you have to sync up vibrations and really, truly feeeeeeel your request in a LOA sort of way (I like the idea of LOA having multiple vowels for some reason) but I do think you can send mixed signals, whether or not you verbalize them. Like, "I request the most benevolent outcome for me to meet my husband and lover-soulmate and I ask that this outcome be better and more amazing than I could have imagined, but just not right now, finals are coming up, I have to finish university, I barely have the energy to cook dinner after I get home from work, thanks!" or "...and I request this outcome be fulfilled within the next twenty-four hours but I'm not really expecting that this situation clear up right now, maybe later or never, not sure, thanks!"