Yes and it’s one I use frequently to debate with PIMIs. If it is in a Watchtower then this is to be taken as Gospel (heavy sarcasm here)!
w74 8/1 pp. 466-473 Maintaining a Balanced Viewpoint
Toward Disfellowshipped Ones
Par. 5: Congregational elders, as well as individual members of a congregation, therefore, ought to guard against developing an attitude approaching that which some Jewish rabbinical writers fomented toward Gentiles in viewing them as virtual enemies.
Par. 17: Since blood and marital relationships are not dissolved by a congregational disfellowshipping action, the situation within the family circle requires special consideration.
Par. 18: Family members can carry out these Scriptural obligations and yet not show themselves out of harmony with a congregational action disfellowshipping one of the family circle. This they do by not spiritually fellowshipping with such a one.
Par. 21: As to disfellowshipped family members (not minor sons or daughters) living outside the home, each family must decide to what extent they will have association with such ones. This is not something that the congregational elders can decide for them. What the elders are concerned with is that “leaven” is not reintroduced into the congregation through spiritual fellowshipping with those who had to be removed as such “leaven.” Thus, if a disfellowshipped parent goes to visit a son or daughter or to see grandchildren and is allowed to enter the Christian home, this is not the concern of the elders. Such a one has a natural right to visit his blood relatives and his offspring. Similarly, when sons or daughters render honour to a parent, though disfellowshipped, by calling to see how such a one’s physical health is or what needs he or she may have, this act in itself is not a spiritual fellowshipping.