So I was watching Issac Arthur videos recently, about colonizing the other planets of our solar system. And it was pointed out that Neptune and Venus have atmospheres and gravity such that an airship could be built that would float in the atmosphere, and allow people inside to live in earth-like gravity.
Which got me to thinking- those airship cities would be so much cooler if people could go outside, stand on the deck, and breath the atmosphere.
But I'm not much good with science. So is it possible, scientifically speaking, for a gas giant / ice giant to have an atmosphere people could breath, at a gravity people could be comfortable in? Is there a possible gas giant / ice giant configuration that would allow that at some point?