Yeah, now it takes longer to learn a skill the more skills you know before you learned it. I imagine you were busy learning another skill while waiting for BLV, and now that you've learned that skill, it's going to take longer to learn BLV. :/
Yes, I learned other skills in the meantime. I haven't started learning BLV yet. So if you learn other skills it lengthens the time to learn skills that come after it?