using System;

using System.Net.Http;

using System.Threading.Tasks;

public class Program

{

    public static async Task Main()

    {

        var newStartDate = new DateTime(2024, 04, 01);

        var newEndDate = new DateTime(2024, 04, 07);

        var existingStartDate = new DateTime(2024, 03, 02);

        var existingEndDate = new DateTime(2024, 03, 03);

        var overlapsStart = CheckOverlap(newStartDate, existingStartDate, existingEndDate) || CheckOverlap(existingStartDate, newStartDate, newEndDate);

        var overlapsEnd = CheckOverlap(newEndDate, existingStartDate, existingEndDate) || CheckOverlap(existingEndDate, newStartDate, newEndDate);

        var overlaps = overlapsStart || overlapsEnd;

        Console.WriteLine($"Overlaps: {overlaps}, Start: {overlapsStart}, End: {overlapsEnd}");

    }

​

    static bool CheckOverlap(DateTime compare, DateTime start, DateTime end)

        => compare >= start && compare <= end;

}