The State of Oregon appeals from a pretrial order suppressing evidence of defendant’s Intoxilyzer test result in this prosecution for driving under the influence. ORS 138.060(3). We reverse and remand for reconsideration.

This case involves a situation where the operator of the test relied on another officer to perform the 15-minute observation period before the test was administered. The trial court ruled that the requirement of OAR 257-030-0070(2)1 had not been met. The trial court wrote in its order, “[w]e know that [defendant] took nothing by mouth and we know that he didn’t regurgitate or vomit.” However, the trial court also found, “[the operator], I am satisfied, did not have that knowledge about the regurgitation.” Ultimately, the court reasoned that, because the designated observer of defendant during the 15-minute observation period had not expressly communicated to the operator of the test about whether any of the events described in the rule had occurred, our holding in State v. McVay, 83 Or App 312, 731 P2d 466 (1987), required suppression in this case.

In State v. Tynon, 152 Or App 693, 955 P2d 250 (1998), rev den 328 Or 365 (1999), we held that the fact that there were no express communications between the operator of an Intoxilyzer test and the observer of the defendant did not preclude a finding that, under the totality of the circumstances, the operator had formed the belief required by the rule. We said that the rule requires that the operator have a subjective belief that the rule’s requirements were met and that that belief must be objectively reasonable. We also disavowed any suggestion that, under the holding in McVay, “the *352rule contemplates only express oral communications” between the observer and the operator. Id. at 697 n 3. Here, it is not clear to us from the trial court’s findings or from its reliance on McVay that it applied the correct test.2

The state also argues that, even if the rule’s requirement was not met, admission of the test result is required under ORS 136.432, which provides that “[a] court may not exclude relevant and otherwise admissible evidence in a criminal action on the grounds that it was obtained in violation of any statutory provision” subject to certain exceptions.3 In light of our disposition, we need not decide that issue at this time. However, we note that should the trial court on remand determine that the rule’s requirement was not met, it must then determine admissibility under ORS 136.432.

Reversed and remanded.