You can just pass those objects as arguments into SomeSub_part2() in your first method.
Call Module2.SomeSub_part2(xlx, xlw, xls, xlc)
And then add them as parameters to your "part 2" method:
Public Sub SomeSub_part2(xlx As Object, xlw As Object, xls As Object, xlc As Object)
...
Disclaimer: I'm a C# developer, but I'm currently working on translating a project written in VBA.