In an online lecture-based course (synchronous or asynchronous), the online instructor will typically record and post voice over lecture slides in the LMS, and a handful of check-in activities with learners to ensure that everyone is making sense of the concepts and content.
It may be that you equate asynchronous online teaching and learning (rich, engaging, interactive cohorts of learners guided by a “present” instructor) with self-paced online learning (individual, no interaction, no instructor presence, summative feedback that may or may not be automated, or timely) – that is an assumption to check, and NOT necessarily the case.