Selecting a range of entries based off of a custom field

I have a custom calendar I am building for a client. I wanted to filter the fields before I started displaying so I could avoid conditional statements.

Here is an example channel tag

{exp:channel:entries channel="calendar_events_and_entries" search:start_date=">1422748800" search:start_date="<1425081600" orderby="start_date" sort="asc" dynamic="no"}

I need to know if the search:start_date is over ridden by the second one.

Thank you for any help you can provide.