Hover synchronization in 2 charts in 'x unified' mode

I have 2 charts. In chart1 there are 6 curves. In chart2 one. In both there is a hovermode: ‘x unified’. This gives the effect as below:
MicrosoftTeams-image (1)

Hovering the mouse over chart2 I have to have X-axis tracking ( in both charts it is the time in a day every 1s) I have to have tracking in chart1, I managed to do it in the version as below:

However, it is not ‘x unified’ mode. And this is what I expected from a chart in such a mode. Does anyone know how to do this?