Discussions have taken place in recent months.
It might take up to six months to name a leader in the region, says AKQA CEO Ajaz Ahmed.
The streaming audio giant dropped US$235 million on the podcast advertising and hosting platform.
Grey agency brand is to be dropped after 103 years as part of merger to create brand experience agency that combines digital and creative.
The combined company will aim to create a "powerful, strategic alternative to the walled gardens".
2019 saw some of the industry's biggest ever deals.
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