Can UE (REL-15) send ACK/NACK on two consecutive slots in PUCCH?

Hi All. Question regarding UCI on PUCCH.

Can UE (REL-15) send ACK/NACK on two consecutive slots in PUCCH?

For example, If the slot configuration is DDDDDDSUU, and PDSCH invokes 4 Parallel HARQ processes, in such case, can UE be allowed to send ACK/NACK using Format-0 PUCCH on two UL slots ( 2bits in the first UL and the other 2 bits in second UL slot)