It can be done: whether it's worth it, or even worth watching, is another story. It was always possible in jive: there's the famous Willy Ronis photo (Willy Ronis, whose images of post-WW2 southern France capture warmth and well-being, who died last year, aged 99). & I've seen some of the older dancers at the 100 Club manage it well.
But in tango? & in milonga... Here's the milonga: Rubén Terbalca dancing with 2 women a month ago, on his current European visit.
And for tango, Adela Galeazzi, Elba Biscay and Santiago Cantenys in Salon Canning a few years ago.
How can I put it? Perhaps Adela Galeazzi, Elba Biscay and Santiago Cantenys all at once might be too much of a good thing. I'd much rather see 'tango por dos', Santiago dancing with them individually!
Videos thanks to Benomano and ruse08