I found an older video on Ven Dhammananda’s YT channel where she speaks about this at more length. I made a transcript of the relevant part (it is preceded by the Venerable explaining to some visitors how bhikkhuni ordination came to be). I think this makes this latest address by the Venerable more clear.
I don’t know Pali, so please excuse any misspellings. Starts around 19:57.
"Another confusion that I need to make very clear: the monks and many Thai people would be confused saying that for ordination, you need two Sanghas: you need Bhikkhuni Sangha and you need Bhikkhu Sangha. Is it true? They are quoting from Garudhamma No. 6. Garudhamma No. 6 says a bhikkhuni must seek both Sanghas to give ordination to her student. The bhikkhuni herself is ordained, but the bhikkhuni teacher must seek for both Sanghas to give ordination.
Why these both Sanghas? What do they do? Again, we have to refer to the texts. Ordination is always done by the Bhikkhu Sangha, from the Buddha’s time, as the Buddha allowed. Always done by Bhikkhu Sangha only. But there was one particular case of a person who asked for ordination, a lady, she feels shy to answer questions that were about her private parts: whether she always menstruates or whether she has both genders – very personal questions. And she had to answer among all these monks. Imagine Indian culture at that time – women never speak in front of men to begin with. But that time she had to answer the private questions in front of the monks, so she felt shy, and she just kept quiet.
But as she kept quiet, the ordination could not be proceeded. So, the monks reported to the Buddha, “What to do in this case, how do we continue with the ordination?” So, the Buddha said, “Oh, because she felt shy among you, bhikkhus, so allow the bhikkhunis to ask questions!” So that was the start of getting bhikkhunis involved. Not giving ordination – involved to purify the candidates. Purify what? Purify these 24 points that might be of danger to her ordination. In Pali, it is called “antarāyikā dhamma [?]” – 24. For the monks, there are 13, but for the women there are 24. So, she answered, the candidate answered these Dangerous Points to the bhikkhunis, thus considered she was purified now.
After the candidate is purified, now the candidate is being sent by the Bhikkhuni Sangha to the Bhikkhu Sangha for ordination. The full ordination is called “Upasampadā”. Upasampadā is done by the Bhikkhu Sangha. This is how it is done. Now, you understand each step.
Now, the question is: If a candidate… There are no bhikkhunis in this country – they always say that you have to be ordained by both Sanghas, and “you have to have bhikkhunis, otherwise we cannot give ordination.” And that has been excuse in this country for 700 years for not giving ordination to women. Now, this candidate – she is brave, she is bold, she can answer all the antarāyikā dhamma to the Bhikkhu Sangha. Can she be ordained? Of course, logically, she should be ordained without Bhikkhuni Sangha. But they always give this as an excuse, that because there are no more bhikkhunis, so therefore ordination cannot be done.
If we study the texts very closely, with respect to the Buddha, with respect to the Buddha’s intention, quoting from the Maha Parinirvana Sutra that it was the Buddha’s intention to have the fourfold Buddhist communities – then we will understand our role, our duty, our responsibility to fill in the gap which is missing in this country. Which gap? The bhikkhuni gap – you know, the bhikkhu, bhikkhuni, upasaka, lay men, and lay women."