PADI Deep Diver Specialty

[DevonDiver]

Ascents, emergency decompression, hang tanks, sac rates, consumption calculations and dive planning was all covered in the deep part of AOW. Redundant "on-diver" air sources was one of the topics, but not practiced which would be the only part of what you mentioned that wasnt..
If thats the norm or just me getting lucky with the instructor I cant say for sure, but it was part of my AOW.

I can say for sure.... you were lucky!

Here is what PADI specify for the AOW Deep Dive

Skills Overview
• Knowledge Review
• Briefing
• Timed Task on Surface
• Assembling and Positioning Emergency Equipment (if appropriate)
• Suiting Up
• Predive Safety Check (BWRAF)
• Entry
• Descent
• Timed Task on Bottom
• Depth Gauge Comparisons
• Tour
• Ascent — Safety Stop
• Exit
• Debrief
• Log Dive – Complete Adventure Dive Training Record

Whilst I think your instructor did an excellent job in introducing all of that material to you, it seems a bit condensed to do it all on one dive - and expect it to become ingrained and familiar. Hence, the Deep Speciality.... more chance to practice, refine, recieve feedback, gain further insights.