Arcana Coelestia # 5926
5926. 'And he fell on the neck of Benjamin' means an inmost joining to the intermediary. This is clear from the meaning of 'the neck' as an influx, communication, and joining together, dealt with in 3542, 3695, 3725 (strictly speaking it is a joining together of celestial things and spiritual ones, 5320, 5328, thus a joining of the internal celestial, which is 'Joseph', to the spiritual of the celestial, which is 'Benjamin'; consequently 'falling on the neck' means joining very closely to oneself, which is therefore an inmost joining together); and from the representation of 'Benjamin' as the intermediary, dealt with in 5411, 5413, 5443, 5679, 5686, 5688, 5689.
Arcana Coelestia # 3725
3725. 'Which he had placed as his headrest' means with which communication took place with the Divine. This is clear from the meaning of 'a headrest' or pillow as a very general communication, dealt with above in 3695.