LOL. I don't need to post it. You've brought nothing of merit forward yet. Given that last time even when I did give you concrete evidence (frankly with a lot more curtesy than you are earning right now) you simply chose to ignore it. You've used up your free ride of making an outlandish claim with nothing to back it up. So now the burden is not on me, or anyone else, until you can actually come up with something that resembles a solid reason -for- Quicken metamagic is explicitly excluded from the requirement that you must concentrate on one spell to the exclusion of other spells during the casting period to cast a given spell.
So how about then we do things different this time by you starting out by bringing a coherent logical arguement forward. Not just selections of vague sentences that prove nothing about the subject at hand.
Not that it is all that pertanent to your original babbling. But seeing how you have lost that one I'll let you move onto another.
I'll give you, say 48 hours. So in a couple days I'll check back and see what you have. That'll should give you plenty of time....if there is actually something to this claim of yours. Of course I expect you to give an empty answer here quite quickly that you already have proved it. You haven't of course, but I don't need to get into that now. I'll save that laugh for a couple days if you decide to endulge me such.