Indeed you did! CBOE COB quotes are not quoted right now.When the market opens I will be spending some time monitoring it to get some further intuition.
Although
@FSU stated he gets the best liquidity routing complex orders at CBOE, breaking the order up into it' s individual legs and spreading them across exchanges (SMART) seems like it would have a much better/faster chance of getting filled (Even with the time lag IB takes to find the exchange with the highest rebate). I mean the COB for a 352 FLY must be pretty thin. Am i thinking about this right?