As far as the box is concerned no coax connection, no live channels. There also will be problems if the box reboots, as it must load all the TV channels as part of the reboot process. If it doesn’t find channels the reboot will hang.
If however you are talking about a coax into the TV itself, then no. You don’t need it, as all the channels come through the white Virgin coax.
Virgin BB TV Landline. Freeview/Freesat HD, Virgin Mobile, Tesco Mobile. Cable customer since 1993
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