Clases para validación de superposición de rangos

Método que las utiliza:  

static bool RangosSuperpuestos(DataRow dr, string pHoraInicio, string pHoraFin)
{
     DateTime horaIniciodr = DateTime.Parse(dr["Inicio"].ToString());       
     DateTime horaFindr = DateTime.Parse(dr["Fin"].ToString());
     DateTime horaInicio = DateTime.Parse(pHoraInicio);
     DateTime horaFin = DateTime.Parse(pHoraFin);
     return Range.Overlap(new Range(horaIniciodr, horaFindr), new Range(horaInicio, horaFin));
}

Clases Auxiliares:

class Range
{
   public readonly T Start;
   public readonly T End;

   public Range(T start, T end)
   {
        Start = start;
        End = end;
   }
}

static class Range
{
   public static bool Overlap(Range left, Range right) where T : IComparable            
   {
      if (left.Start.CompareTo(right.Start) == 0)
      {
         return true;
      }
      else if (left.Start.CompareTo(right.Start) > 0)
      {
         return left.Start.CompareTo(right.End) <= 0;
      }
      else
      {
         return right.Start.CompareTo(left.End) <= 0;
      }
  }
}