'Will Marcel replace creatives?': Sadoun faces deluge of questions from Publicis staff and clients
Here are a few of the more interesting (and entertaining) questions asked and answered that day:
The Federal Bureau of Investigation is looking into media trading and transparency in the US advertising market.
Mark Read has warned against "collapsing" too many WPP agency brands and said driving greater collaboration is more important than a "major restructuring".
Rishi Shah stepped down from the chief executive position five months ago amid fraud allegations.