If...you...can't...tell...definitively...who...has...possession...of..the...ball...you...can't...grant...a...timeout...to...Iowa...there...simply...because...some...player...at...mid...court...is...yelling...for...it.
Also, in case nobody caught this nugget. Per NCAA update: "A rule prohibiting coaches from calling a timeout in live-ball situations went into effect last season, allowing officials to grant only timeouts that were called by players."
More on that: "Last season, the most common lament from coaches was how they could not call a timeout in any live-ball situation. That is still the case ... mostly. Now, coaches will have the ability to call a timeout when a ball is "live" after a made basket on an inbound situation.
The idea behind getting rid of coaches calling TOs in live-ball situations came down to a lot of guys just yelling "timeout!!" when a ball was in a scrum and possession wasn't determined."
And this: "A player may call a timeout during a game only if he has control of the ball and signals the referee. When the ball is "dead" (not in play), either the coach or a player may signal a timeout.
The visual signal that is usually given is a "T" sign formed by placing the palm of one hand horizontally over the upright fingers of the other hand, which is being held vertically. Oral signals are usually the words "time" or "timeout" yelled at the referee. Because basketball games are usually loud and fast-paced, coaches and players typically use both signals simultaneously in order to get the referee's attention."