I am having following ideas.

1. we employ both 2D and 3D shape knowledge to the working process.
2. This leads in distinguishing objects-A from other objects-B efficiently.

then,

we employ both 2D and 3D shape knowledge to the processing working process, which leads in distinguishing objects-A from other objects-B efficiently.

IS it enough only to use "which" to combine these 2 sentence?

I am having following ideas.

1. we employ both 2D and 3D shape knowledge to the working process.
2. This leads in distinguishing objects-A from other objects-B efficiently.

then,

we employ both 2D and 3D shape knowledge to the processing working process, which leads in distinguishing objects-A from other objects-B efficiently.

Is it enough only to use "which" to combine these 2 sentence?