Is it possible to do a gantt chart in excel with the following criteria:

Bus Start Date Duration End Date Start Date Duration End Date
L180 9/1/2007 5 9/6/2007 9/15/2007 6
9/21/07
L220 9/15/2007 4 9/19/2007 9/25/2007 4 9/29/07

I am able to get the first set of start and end dates to chart, but not the
2nd series.
Any help would be appreciated. I've been trying this for months.

Karen