It has been shown in another thread that the Tulku system is a valid one and that the belief in reincarnations of highly attained Masters, who show their Bodhisattva natures by returning again and again to bring Dharma to beings for the benefit of all, is an ummistaken one.
The great Master, the first Domo Geshe Rinpoche was very very close to HH Kyabje Trijang Rinpoche. It stands to reason (karmically and logically speaking) that his incarnation, the second Domo Geshe Rinpoche, be recognized by HH Kyabje Trijang rinpoche. It also stands to reason (karmically and logically-speaking) that the current incarnation of Trijang Rinpoche, Trijang Choktrul Rinpoche, should be the one to recognize the third incarnation of Domo Geshe Rinposhe.
Indeed, now that Domo Choktrul Rinpoche has , under the instruction and advice of Trijang Choktrul Rinpoche, moved to Shar Gaden to begin, in earnest, his learning and training to become a great Lama like his previous incarnations, there can be no further doubt that he is a valid incarnation of Domo Geshe Rinpoche..
Nonetheless, just as has been said of the 2 Panchen Lamas and the two or more possible emanations/incarnations of Dorje Shugden and Tulku Drakpa Gyaltsen, Enlightened Beings, out of great love and compassion for sentient beings, can come in more than one emanation to benefit all. So the Domo Geshe Rinpoche, currently being heavily promoted by HH Dalai Lama, may yet prove to be a valid incarnation too.