[split] Phalanx warfare: use of the spear

[Paul Bardunias]

but was it actually doubled? shoulder patches seem to be from a single piece, while they only overlap with the torso just on a small portion of upper chest.. Plus, those shoulder patches seems to be a bit smaller than those used on Roman Lorica Hamata.

Another thing is, that Tube and Yoke armor doesnt have sleeves like Hamata has, so if you stand in oblique order with the shoulder behind the shield you actually present a bit more open area on your chest, theoretically, a direct strike could just enter that uncovered space and go into the body unrestricted.

Hmmm... not sure where you got  the idea it was doubled.  I have never seen a t-y made that way.  They were often reinforced with scales though. (Oh I see Dan said doubled, that would be only at the chest level)

I am not sure about them being smaller than those on Hamata, but I don't see what you are saying about the sleeves making any difference in an oblique stance.  If you were turned the other way, then yes the T-Y presents more of an opening around the arm.