If you do have the VIM2 + VTV extension it can display the 1080i channels…if the tuner manages to get the channel. Out of the aprox 130 DVB-C channels that my TV gets, I only got 13 channels on my VIM2+VTV under android.
That’s why I’m waiting for an Ubuntu VTV driver or more details on how to use the VTV under LibreELEC. I think that under other OS-es the VTV will behave differently.
But, like I said…it did manage to find and display correctly 1080i channels.
Hope it helps!