Thanks to the replies.
I can't remember the exact posts as they were deleted, but someone had commented about objects of differing density falling at different speeds reaching the ground at different times. That poster was told by someone to go back to school as every object falls at the same rate.
I used the concrete and air basketball analogy to defend that small part of the first poster's premise (as it gets very complicated very quickly with inflight breakup and 470kts fwd velocity) and was then told I needed to go back too school too!
Never one to take a false accusation lying down (to my detriment at times!) thank-you!