As I have said before, I don't really think they understand each other. They understand one another just as much as any adult would another co-worker. I think that's more so how to describe that. XD Yes, but too much strife and disagreement is just as bad as NO strife and disagreement. And they'd have a wee bit over that line.
Yes, because I think she likes Mitsuhiko more. XD She scares Conan and pisses him off and vise-versa. Mitsuhiko is a gentle and caring boy that cares deeply for her. She notices that. And no, no she does not like Conan. At least, not defanitly. She has never outright said she liked Conan so you can't make that assumption. XD I think she and Conan will never be more than friends. Even if she did have interest in him I don't think it's mutual. XD lol
That's not true at all. Ayumi has shown she has feelings for Conan. That's canon. Haibara's feeling can be guessed but she has not said anything along the lines of "I like him". Ayumi has literally said the words "That's why I love you, Conan-kun!" before. So I think Ayumi is a wee bit closer than Haibara is. XD lol Not meaning to be mean or anything...
How is it impossible? XD I really don't think it is but whatever you wanna think...
AiCon is alright be I don't think it will happen. There are no signs leading me to believe there are, there hasn't been any character development between the two of them as of recently, and there is no canon established interest romantically between the two. I will need to have some serious convincing to believe in those two as a couple. XD