Besides the fact a team of two provides more reliable audits (see 2. What is the composition of an audit team?), it also allows a repartition of the different tasks between the team members on a shorter time span.
HQAI’s teams are in principle composed of a Lead auditor (who takes the lead of the process) and another registered auditor, who has less experience and whose fees are significantly lower than those of the Lead auditor. This combination allows to save about 60% of Lead auditor’s time and leads to less expensive, but more robust audits.