Keep on talking
People will be conscious of network connection issues during a live stream class. It's important to remain vocal throughout to reassure them that they are still with you and in the class.
You might be the vocal type. You might opt for a more relaxed approach to leading a class. During a live stream class, remember to always let people know you'll still there and with them. It helps to be as vocal as possible. Try to keep talking - reassure the people that you are still there. This can be hugely beneficial for participants with sensory impairments, for whom you will need to maximise the quality of your verbal communication.
Stand back and watch people’s form - don’t continually be working. If you stop and observe, people will appreciate this - this is probably why they joined the class. You could start people off on an exercise and then offer feedback (individual or group) by looking at people's videos. Give them feedback on their effort levels or form, which will reinforce the idea of community.
Focus on positivity: “Great squat! Good form!” You want to provide positive feedback and helpful encouragement without making people feel like they’re being shouted at for an hour in their own home. Unless that’s your style, in which case make that known at the start and in your session descriptions.
This is no different to an in-person class. People have had to make the effort and motivate themselves to be there with you. So, at the end of your class, don’t forget to get everyone to do a big round of applause. Celebrate the accomplishments of each and every one of them! This can be especially important for disabled people who may feel more isolated or less active during this time - if you have time a little chat at the end to give feedback, etc. you can help people feel more included (see Activity Alliance's website for more information on adapting activities so more people can stay in and work out).