How to interprete this 寝坊していつもと違う


The full sentence: 彼女と知り合えたのは、 **寝坊していつもと違う電車** に乗ったおかげです。

My attempt at translation: "Concerning that I could get to know my girlfriend,
it is thanks to that I got _onto a different train when always oversleeping_."

I got problems with the parts in bold/italic.

First, I'm confused by いつもと. Is it いつも+と or a short form of いつも通り (=
<http://jisho.org/search/itsumoto>) Since いつも is positioned strangely compared
to what I usually encountered in my textbook so far, I would guess that it is
the latter. In this case, I would find it easier to interprete the sentence:

a)"Concerning that I could get to know my girlfriend, it is thanks to that I,
oversleeping as usual, got onto a different train."

or

b) "Concerning that I could get to know my girlfriend, it is thanks to that I,
oversleeping, got onto a different train than usual."

In version b, the A と B は 違う construction (if I remember correctly) would be
reflected. However, いつも通り meaning "as usual", I'm still skeptical about wether
or not I can make such a modification from "as" to "than".




> 彼女と知り合えたのは、寝坊していつもと違う電車に乗ったおかげです。

  * 寝坊して means 寝坊したので _because I overslept_
  * いつもと違う means いつも乗る電車と違う _different from the train I always take_

彼女と知り合えたのは、寝坊していつもと違う電車に乗ったおかげです。= 彼女と知り合えたのは、いつも乗る電車と違う電車に乗ったおかげです。+ 寝坊したので

So my attempt is:

> I got acquainted with her thanks to having taken a train which was different
> from what I had always taken because I overslept.

