Can a hadith containing a narrator unknown by name be strengthened by another hadith containing a different narrator unknown by name?

The Shaykh : The answer remains regarding strengthening an unknown narrator with another unknown narrator, or with an ambiguous one.

The questioner : Unknown by name.

The Shaykh : Unknown by name. Yes, we say the answer is approximately the same as the answer regarding a mursal (report missing the Companion link) with another mursal. If the ignorance is in the same tier and the same era, there is no strengthening. However, if the tiers are different, it is possible to strengthen an unknown narrator with another unknown narrator. For example, the unknown narrator in one narration might be a Tabi'i (successor), while the unknown narrator in the other narration is from the generation of the Tabi'in (the generation after the Companions) or below that. The tiers are completely different such that one looking at these two narrations would be convinced, or rather certain, that it is not possible for one of them to have taken from the other, just as was said regarding the mursal reports. In this case, one narration can be strengthened by the other, even if each contains a narrator unknown by name or one who was not named.
Abu Malik: Regarding the mursal, the mursal means, as if you indicated that the two mursal reports are from the same era and not...

The Shaykh : That is the nature of the mursal, may Allah reward you. It is the Tabi'i.
Abu Malik: As for the unknown by name or one who was not named, if the tier differs, it does not affect the strengthening.

The questioner : O Shaykh, unknown by name means, if the hadith comes from the other narration as a connected chain (musnad), but there is weakness in its chain, for example, a weak narrator or one whose status is unknown, for example, even if they are in the same tier. For example, we have a chain with an unknown by name in the tier of the Tabi'in, and another in the chain for the same hadith with an unknown by name. Does this one support the other? Because it seems the first scenario does not apply to a question like this.

The Shaykh : Excuse me, what is the first scenario?

The questioner : It seems it was about the ambiguous one. So I am asking now about unknown by name and unknown by name. If they are in the same tier, does one support the other?

The Shaykh : In the same tier, no, they do not support each other.

The questioner : Meaning, he was named, his name was mentioned.

The Shaykh : Even if he was named, because the mursal we discussed is known to be named and to be trustworthy. So why did we not strengthen one with the other due to the possibility that each of the two trustworthy mursal narrators took from one person? The same cause applies here.

The questioner : The possibility is that, but here the unknown by name in this chain takes from another narrator from another sheikh, and the unknown by name in the other chain takes from another sheikh as well, and the text is agreed upon in wording or meaning.

The Shaykh : But it is possible that one of them took from the other.

The questioner : It is possible.

The Shaykh : This possibility is possible.