i think you could make this with tunisian. when it gets the the split, you could keep working half the stitches until both halves are long enough and then start stitching across the entire piece again at the other end.
ru crochet summer jacket, entire pattern on page
Nicky Epstein, Cable Crossover (already bought pattern!
Posts on the topic of вязание added by Любовь Сергеева
"АНАНАСОВЫЙ" ВОРОТНИК ИЛИ КОКЕТКА КРЮЧКОМ.
Add sleeves and this would make a fabulous sweater coat!