out.ResponseHeadersToAdd = append(out.ResponseHeadersToAdd, weighted[0].ResponseHeadersToAdd...)
		out.ResponseHeadersToRemove = append(out.ResponseHeadersToRemove, weighted[0].ResponseHeadersToRemove...)
		if weighted[0].HostRewriteSpecifier != nil && action.HostRewriteSpecifier == nil {

		out.ResponseHeadersToAdd = append(out.ResponseHeadersToAdd, operations.ResponseHeadersToAdd...)
		out.ResponseHeadersToRemove = append(out.ResponseHeadersToRemove, operations.ResponseHeadersToRemove...)
		if operations.Authority != "" && action.HostRewriteSpecifier == nil {
			// Ideally, if the weighted cluster overwrites authority, it has precedence. This mirrors behavior of headers,

		r := routes[0]
		g.Expect(len(r.RequestHeadersToAdd)).To(Equal(4))
		g.Expect(len(r.ResponseHeadersToAdd)).To(Equal(4))
		g.Expect(len(r.RequestHeadersToRemove)).To(Equal(2))
		g.Expect(len(r.ResponseHeadersToRemove)).To(Equal(2))

		g.Expect(r.RequestHeadersToAdd).To(Equal([]*envoycore.HeaderValueOption{
			{
				Header: &envoycore.HeaderValue{
					Key:   "x-req-set",
					Value: "v1",
				},