Swim Splits IMFL vs Others

Anyone here who has done IMFL and another IM race ? I'm just curious as to the differences in your swim and bike splits between the ones that you've done. I see YouTube videos of the IMFL swim and I see a lot of walking in the water. I'm wondering if that makes your overall swim time a little bit slower or if the ocean boyancy and current/waves make you make you any faster/slower.

Same with the bike. We know it's flat but the wind is sometimes an equalizer to the hills. Are your personal bike splits any different ?