@seattlebum also note that typically, a revocable trust is set by each spouse covering all the marital property and each naming the other spouse as successor trustee. Alongside this there is also a will by each spouse leaving every thing to the living spouse, a pour-over clause to transfer the final trust to the estate of the last spouse and the distribution regime when both spouses pass. Also note that the trusts each become irrevocable on the death of the trustor. Thus when the mother dies, her trust becomes irrevocable, transfers the assets per the will to the remaining spouse. The when he dies, the trust which now consists of the first spouse and the second spouse becomes irrevocable, pours into the estate and gets distributed per the last will and testament of second to die spouse. Thus I do not see the meaning of the question that tries to draw a distinction between distribution caused by a revocable trust and and irrevocable trust What am I missing here ?
I generally agree with the comments/answers by @Anonymous_
