Learnosity allows a tool such as the Atomic Assessments (Learnosity Connector) to register to listen for xAPI events representing user interactions with Learnosity Items and Activities. Here are links to information about Learnosity support for xAPI:
Atomic Assessments doesn't currently request, collect, or provide a way to view xAPI events from Learnosity. If this is something you want, please comment on this article or otherwise contact Atomic Jolt.
Canvas allows an LTI tool such as the Atomic Assessments to post xAPI events back to Canvas:
Currently the only event that it supports is "Interacted" (a page view). If a tool sends those events to Canvas, they will show up in the course analytics section as activity.
Atomic Assessmen doesn't send these xAPI events to Canvas. If this is something you want, please comment on this article or otherwise contact Atomic Jolt.