// mtlsOnExpect defines our expectations for when mTLS is expected when its enabled
			mtlsOnExpect := func(from echo.Instance, opts echo.CallOptions) bool {
				if from.Config().IsNaked() || opts.To.Config().IsNaked() {
					// If one of the two endpoints is naked, we don't send mTLS
					return false
				}
				if opts.To.Config().IsHeadless() && opts.To.Instances().Contains(from) {