Although this situation is so amazingly in suspension, I'd say: No way.
ARD also just reported that the Bavarian environment minister thought about it aloud
"We will also talk with the Greens"
What I do know is that some commenters here will disagree with my comment below. :)
But IMO the CDU - the conservatives - is a center-right party. And the SPD a center-left party. With overlap in the "center", the "moderate" position.
A lot of German "conservatives" would be considered wild-eyed leftist radicals in the USA. :)
We would have nothing to say to them
I was watching it on BBCNews and it doesn't seem like the greens want anything to do with CDU Join The Community - the voices must be heard Voices In The Wilderness
To answer your question. No. Such a coalition would require a real miracle (with direct "heavenly" intervention).
Since the first results came out, the lightweights of the airwaves have been calling this the "Jamaica coalition".
Poor Bob Marley must be rolling over in his grave. The fact is that what we're experiencing right now is a top-down disaster. -Paul Krugman