Then I tied the wires with that inserted tie clip from one end & pulled them out from the other end.
That's how I crossed the wires from rubber grommet.
Next, I crossed these both green wires from spare space in the plastic connector tab.
I was placing the plastic connector tab back after reconnecting everything, when I got to know that I did it wrong, as it wasn't sitting at its place.
After this, a fellow swifter @arslanjanjua came into play. He said you have two options for this.
1- Either find spare male/female pins for this connector & install them & continue the job (This needs removal of BCM as we don't have enought space behind the dash)
2- or drill the tiny spare holes (designated for pins) in the connector big enough so that the wires can pas through it directly.
Finding spare pins wasn't possible in my local city as well as I didn't had any drill at that time to make holes in the connector.
P.s. that's when the things got difficult & I forgot to take any pics as I was focused on completing the job.