I love that Kalanchoe Chocolate!
Those Mammas are easy to grow, you can't kill them. Only me is the one who is killing them regularly. Every time when they grow big and full their pots, some very cold winter comes and they die, and I manage to rescue few 'fingers' only. They will forgive you all except below 0 degrees...
None of my succulents will forgive me below 0 degrees so I try not to let that happen and it is a rare occurrence where I live so not difficult to prevent. Did you leave yours outside?
No. With first nights that are close to 0 degrees, I move them to small glasshouse where the need to turn on the heating is only when it is -4 or more. OR when the north cold wind is blowing.
When I came into this house I didn't know for those differences in climate- near woods and by the asphalt part of town. Although I am still in the same town, here is much higher winter humidity; many cacti that could winter outside there, here cold humidity kills them. Second thing is that cold north wind. When it starts to blow, it can blow for many days and then temperature crush suddenly. I have to turn on that heating immediately, If I am not reacting on time, in the glasshouse it can drop below zero. That is how some plants died to me here.
Moving to a new environment is always challenging for plants. So frustrating to lose them that way. I hope you didn't lose too many