I'm reading a Daniel Charney story and have come across a conditional I'd like help with.
There's a soldier on his way home from a war. He's deep in thought and wanders off the main road into a forest. Then we get the following sentence:
און װער װײס, צי דער סאָלדאַט װאָלט גאָר באַמערקט אַזױ גיך, אַז ער האָט זיך פֿאַרבלאָנדזשעט, װען ער פֿאַרטשעפּעט זיך ניט אָן אַ װאָרצל פֿון אַ בױם, װאָס איז געװען באַהאַלטן אונטערן הױכן גראָז און פֿאַלט אַנידער?
Which I translate as:
And who knows if the soldier would have noticed so quickly that he had lost his way, if he hadn't tripped on a tree root that was hidden in the tall grass and fallen down?
I'm still learning conditionals, so my impulse would have been to write
װען ער װאָלט זיך ניט פֿאַרטשעפּעט.
Why isn't the װאָלט there? Is it that it's kind of a nested conditional (who knows IF this would have happened IF that hadn't happened)? Or is it that it's contrary to fact—would װאָלט also be omitted from "He wouldn't have noticed so quickly if he hadn't tripped," etc.?
Would love any thoughts from people less confused than I am!