I searched around for older postings about Sirius in relation to the calendar or Dendera and found the following most interesting:

This is a great one! Robert Bauval on his red bike "Satis", that's more for folklore and celebration
[www.maatforum.com]
Robert, if you are reading here, check out my poster linked from [www.maatforum.com] .

Robert's posting about this paper:
On the Orientation of Ancient Egyptian Temples: (1) Upper Egypt and Lower Nubia
by Mosalam Shaltout, Juan Antonio Belmonte
[www.maatforum.com]
paper: [www.researchgate.net]

That paper is about a resarch analyzing the orientation of 115 temples. There is definitively a clustering visible around the ESE direction where Sirius is rising for the first time each year, that's 108° from N or 18° from E. PDF page 18 is discussing the Sirius alignment for the Hathor temple which is clearly defined.

Here the best matches around 18°:

Hathor, Dendera 18
Isis, Dendera 18
Mut, Karnak 18
Ramesses III 19.5
Thoth, Dakka 20.5
Metnuemhat, El ASsasif 21

But there are many more. PDF page 9 shows a graphical overview of all orientations indicating the clustering.