CAA acquiring ICM Partners came together in secret over a short period of time — so much so that longtime insiders at both agencies were learned of the deal moments before the news was formally announced on Monday.To CAA’s trio of leaders — Bryan Lourd, Richard Lovett and Kevin Huvane — and ICM Partners’ chief Chris Silbermann, the fact that the talks were kept quiet was a sign that the leaders are temperamentally in sync.“It’s a testament to the reason for the partnership” that word of the