Does the authenticity of a hearing by a mudallis from a person imply the continuity of the chain?

The questioner : In the hadith of 'Abdullah ibn Sarjis regarding urine in a burrow—meaning, al-Shawkani (may Allah have mercy on him) reported that Ibn Qutadah’s hearing from 'Abdullah was authentic, and Ibn al-Madini authenticated the hearing, and Ibn Khuzaymah and Ibn Hibban authenticated the hadith; what is your response to this?

The Shaykh : The fact that a mudallis’s hearing from a person is authentic does not imply continuity; because continuity, according to the majority who are content with contemporaneity, requires that the narrator not be described as a practitioner of tadlis. As for one who is described as a practitioner of tadlis, it is necessary for him to explicitly state that he heard it; otherwise, the defect is the use of 'an. What you quoted does not mean that we say he did not hear it, but rather that we say he used 'an. If he had explicitly stated that he heard it, and it were said that he did not hear it, we would say that he explicitly stated that he heard it. But the defect is that he used 'an and did not explicitly state that he heard it.