Zevahim 26: When a Father Corrects His Rabbi-Son

What happens if the animal to be slaughtered is partly outside of where it needs to be for the slaughtering in the courtyard - Shmuel's father answers Shmuel. Ideally, no. And then the Gemara brings other cases - what the animal were suspended in the air? Shmuel says it's fine, and his father notes that it has to be in the courtyard, and suspension in the air doesn't fulfill that requirement. What if the slaughterer was suspended in the air? Also, a new mishnah - with a list of what is NOT acceptable to do, rather than what is, in terms of where the blood needed to be placed.