@Sir Humphrey said:
I would be a bit careful about too strictly enforcing one turn each.
I think the rule on “one turn each until everyone who wants to speak has had a say” is there for when one person or a noisy minority try to dominate and it gives you a valid basis on which to shut them up.
The exchange of information you described may violate the strict reading of the rule but I doubt if it would offend anyone.
I see the Standing Orders as more of a safety net than a strict batting order for speakers. Many committees get along fine without one … until the inevitable loudmouth comes along and takes advantage of everyone else’s good nature.