Would this using close this _connection?

using(SqlConnection _connection = Class1.GetSqlConnection())  
{   //code inside the connection
}

//connection should be closed/ended?

I'm just wondering because GetSqlConnection() is a static function of Class1 and the whole connection might not be closed because it is calling outside class' static function instead of straight?

 using(SqlConnection _connection = new SqlConnection(_connectionString)
 {   //code inside the connection
 }