A method for wireless communication at a user equipment, UE, (115-b) comprising: identifying that the UE is to use a two-step random access channel, RACH, procedure, the two-step RACH procedure including an uplink request message and a downlink response intended for the UE; sending, as a first message of the two-step RACH procedure, the uplink request message to a base station (105-b); determining a group random access radio network temporary identifier; receiving, from the base station (105-b), a physical downlink control channel comprising an indication of resources of a broadcast or multicast physical downlink shared channel on which the downlink response is to be received; decoding the physical downlink control channel based at least in part on the group random access radio network temporary identifier; decoding the broadcast or multicast physical downlink shared channel in accordance with the indication received on the physical downlink control channel, the broadcast or multicast physical downlink shared channel being configured to provide downlink responses for multiple UEs; and identifying that downlink responses for multiple UEs included within the broadcast or multicast physical downlink shared channel are multiplexed at a media access control layer; receiving the downlink response from the base station on the broadcast or multicast physical downlink shared channel, the downlink response being a second message of the two-step RACH procedure, wherein the downlink response intended for the UE is one of the multiplexed downlink responses; identifying an uplink grant in the downlink response intended for the UE, the uplink grant indicating resources for transmission by the UE of a confirmation message that confirms the UE received the downlink response intended for the UE on the broadcast or multicast physical downlink shared channel; and transmitting the confirmation message based at least in part on the uplink grant. identifying that the UE is to use a two-step random access channel, RACH, procedure, the two-step RACH procedure including an uplink request message and a downlink response intended for the UE; sending, as a first message of the two-step RACH procedure, the uplink request message to a base station (105-b); determining a group random access radio network temporary identifier; receiving, from the base station (105-b), a physical downlink control channel comprising an indication of resources of a broadcast or multicast physical downlink shared channel on which the downlink response is to be received; decoding the physical downlink control channel based at least in part on the group random access radio network temporary identifier; decoding the broadcast or multicast physical downlink shared channel in accordance with the indication received on the physical downlink control channel, the broadcast or multicast physical downlink shared channel being configured to provide downlink responses for multiple UEs; and identifying that downlink responses for multiple UEs included within the broadcast or multicast physical downlink shared channel are multiplexed at a media access control layer; receiving the downlink response from the base station on the broadcast or multicast physical downlink shared channel, the downlink response being a second message of the two-step RACH procedure, wherein the downlink response intended for the UE is one of the multiplexed downlink responses; identifying an uplink grant in the downlink response intended for the UE, the uplink grant indicating resources for transmission by the UE of a confirmation message that confirms the UE received the downlink response intended for the UE on the broadcast or multicast physical downlink shared channel; and transmitting the confirmation message based at least in part on the uplink grant.