Line and column series have the same XValues that's why their centres are aligned. You would need to generate different XValues for the two series. XValues that are offset by a small margin. Something like this:
Chart1.Series("serTime").XValues = {0.8, 1.8, 2.8, 3.8,,...,count - 0.2}
Chart1.Series("serAdd").XValues = {1, 2, 3, 4,..., count}
I used 0.2 difference, but this will be different in your case (especially since it seems you have date axis set?). This would push the line series to the left.
I created an example for you. On the first picture you can see the data for the columns. Their x values are 1,2,3,4,...,12 and their y values are marked with blue.
And this is the values for the XY chart. As you can see I moved the x values by 0.2 to the left.