I have similar thoughts to Emma. There's quite a few commonalities between the two and perhaps a third - the Caspian Pony (descending from the Asiatic Wild horse). Coat colour, texture, irridescence; the tail set, intelligence, pony attributes, horse attributes etc. Though I would speculate that the connection may have been made prior to the Akhal Teke ie its predecessor, the Turkoman (Iran). These three - the Turkoman, the Caspian Pony and the Arabian are situated geographically close. The Akhal Teke is further north but not too far north. IF any interactions happened at all, it would have been such a long time ago that the years/eons of breeding have mellowed the differences somewhat. However, there are two partially distinct conformation differences in the Arabian
Speculation, all speculation - no fact.
The Akhal Teke (from the USSR) is noted for:
bay, chestnut, dun with a metallic bloom with occasional black, silver
and grey; white markings
small elegant head, fine; big eyes; wide nostrils; large beautifully shaped ears
long thin neck, very high set almost vertical to the body
high sloping shoulder
hooves are small but regular although heels are set low
forelegs set close - otherwise straight; forearm long
sparse mane and tail; silky hair
coat exceptionally fine; thin skin - in character with a desert bred animal
long hindlegs are usually sickle-shaped and cow hocked; hocks carried high
quarters are narrow and mean (lean); spare, sinewy; thighs are long and muscular
obstinate character, tempermental, bold
great stamina, fast, survives on minimal food
magnificent movement, slides over the ground in a flowing movement without swinging the body
Humans took care to maintain the bloodlines!
The Caspian Pony (from Iran) is noted for:
bay, brown, chestnut, grey, occasional blacks and creams
Arab-type head, short; very short ears; large eyes - gazelle-like; small tapered muzzle; large nostrils set low.
fine, thin skin
long neck and shoulder; neck usually arched
narrow body with short back
tail set high,
gentle character, quick-witted
free-floating action; great jumping ability
hooves are strong, small and oval shaped
Geographically isolated - bloodlines maintained!
Both are utilised as riding horses. Caspian is also driven
(collated notes from general horse books).
Think about how these two would blend together over years of meticulous breeding practices!
Then consider which other bloodlines (if any) have these characteristics without any connection what so ever to any or all of these three... coincidence