]3.2.5  Departures from any other International Standard or other anti-doping rule or policy set forth in the World Anti-Doping Code or in these IBU Anti-Doping Rules will not invalidate analytical results or other evidence of an anti-doping rule violation and will not constitute a defence to an anti-doping rule violation; provided, however, if the Athlete or other Person establishes that a departure from one of the specific In-ternational Standard provisions listed below could reasonably have caused an anti-doping rule violation based on an Adverse Analytical Finding or whereabouts failure, then the BIU will have the burden of es-tablishing that such a departure did not cause the Adverse Analytical Finding or the whereabouts failure:3.2.5.1  a departure from the International Standard for Testing and Investigations relating to Sample collection or Sample handling that could reasonably have caused an anti-doping rule violation based on an Adverse Analytical Finding , in which case the BIU will have the burden to establish that such departure did not cause the Adverse Analytical Finding;3.2.5.2  a departure from the International Standard for Results Management or International Standard for Testing and Investigations relating to an Adverse Passport Finding that could reasonably have caused an anti-doping rule violation, in which case the BIU will have the burden to establish that such departure did not cause the anti-doping rule violation;3.2.5.3  a departure from the International Standard for Results Management relating to the requirement to provide notice to the Athlete of the B Sample opening that could reasonably have caused an anti-dop-ing rule violation based on an Adverse Analytical Finding, in which case the BIU will have the burden to establish that such departure did not cause the Adverse Analytical Finding; or[Comment to Article 3.2.5.3: The BIU would meet its burden to establish that such departure did not cause the Adverse Analytical Finding by showing that, for example, the B Sample opening and analysis were observed by an independent witness and no irregularities were observed.]