Yes i think with Bootes one either see the legs bound together, in which case Arcturus is the base/foot/toe point, or one takes into acount the stars extending below as widely spaced legs (or maybe just big feet...). It's certainly very easy to see the mummiform Osiris resembles the constellation.
I want to have a look at Anubis in terms of opening the roads to the North, the initial 70 day period of embalming relevent to the 70 day periodic of Sirius, also Sokar was involved with the mortuary process in terms of the wrapping, and Anubis and Sokar's work takes place in a lower subterranean chamber, (which might be considered a setting below the East-West axis), in preperation for the journey of the deceased to the 'Imperishable Ones'
If as some Egyptologists have suggested Orion could be related to Khoiak/Sokar, and regeneration (through/from the Earth), this in tandem with Canis Major/Anubis might see the first stage in the rebirth of the deceased.
The function of each god was to "open the ways," and therefore each might be called Ap-uat, but, strictly speaking, Anubis was the opener of the roads of the North, and Ap-uat the opener of the roads of the South' in fact, Anubis was the personification of the Summer Solstice, and Ap-uat of the Winter Solstice.
Anubis is called in the texts Sekhem Em Pet, and is said to be the son of Osiris, and Ap-uat bore the title Sekhem Taui, and was a form of Osiris himself. When, therefore, we find the two jackals upon sepulchral stelae, we must understand that they appear there in character of openers of the ways of the deceased in the kingdom of Osiris, and that they assure to the deceased the services of guides in the northern and southern parts of heaven; when they appear with the two Utchats thus, they symbolize the four quarters of heaven and of earth, and the four seasons of the year.
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touregypt.net]
Morph.