The receiver won't get confused. Just like WIVB can display and without and channel number in-between. The only concern that the FCC has in the U.S. to a station's virtual display is that it does not conflict with another station's virtual channel in the same market. (In Buffalo, WIVB has exclusive rights to virtual .)
The mandatory requirements for assigning the major channel number component of stations’ virtual channels are set forth in Annex B to ATSC A/65C, which first lists the major channel number assignment provisions and then explains in subpart 8 that “[t]he provisions listed above assign major_channel_number values 2 through 69 uniquely to broadcasters licensed to broadcast Digital ATSC signals and guarantee that the two-part channel number combinations used by a broadcaster will be different from those used by any other broadcaster with an overlapping DTV service area.”13 This ensures that broadcasters who built their brand in a service area on a particular channel can retain their brand identification even if they are no longer using the same RF channel on which they built their brand ,and that consumers associate with the station.14 Section 73.682(d) and Annex B are self-effectuating, and the Commission’s involvement in virtual channel assignments ordinarily is limited to situations where a station chooses a major channel number and another station objects, or a station requests a waiver of the mandatory channel assignment provisions of Annex B.15 The vast majority of operating full power television stations were transmitting a licensed analog signal prior to the end of the DTV transition in June 2009, and accordingly, are currently using their former analog channel number as their “virtual” or “major” channel number.
and 
without and channel number in-between. The only concern that the FCC has in the U.S. to a station's virtual display is that it does not conflict with another station's virtual channel in the same market. (In Buffalo, WIVB has exclusive rights to virtual 
.)