as said above that the part of each oviduct lying towards the ovary is funnel-shaped and is called infundibulum, isn't called oviducal funnel and infundibulum is the stalk joining pituitary with hypothalamus.
The stalk that joins the hypothalamus with pituitary gland is known as infundibular stem or pituitary stalk where as the part of each oviduct lying towards the ovary is funnel-shaped infundibulum