public static async Task<bool> SequenceEquals<T>(this ChannelReader<T> reader,
                                                      ChannelReader<T> other,
                                                      IEqualityComparer<T> comparer,
                                                      ChannelParallelOptions options)

using Amphisbaena;
using Amphisbaena.Linq;

...

int[] data = new int[] {1, 2, 3, 4, 5, 6, 7, 8, 9};

bool equal = await data
  .ToChannelReader()
  .Where(item => item > 2 && item < 6)
  .SequenceEquals(new int[] {3, 4, 5});