A method for wireless communications at a user equipment, UE, comprising: receiving (1805, 1905, 2005), from a base station, BS, a downlink control message scheduling a plurality of downlink messages and indicating a first offset between communicating a first downlink message (310-a) of the plurality of downlink messages and communicating a first feedback message (220-a, 315-a) of a plurality of feedback messages that correspond to the plurality of downlink messages, wherein receiving (1805, 1905, 2005) the downlink control message comprises receiving, from the base station, BS, an indication in the downlink control message of a first index associated with the first feedback message (220-a, 315-a), the first index indicating a first quantity of frequency-domain resources and a second quantity of time-domain resources used to communicate the first feedback message (220-a, 315-a); determining the first index associated with the first feedback message (220-a, 315-a) based at least in part on the downlink control message, wherein determining the first index comprises: determining an uplink control channel index of the first feedback message (220-a, 315-a) based at least in part on the received indication in the downlink control message and a starting control channel element, CCE, index in the downlink control message; determining a second index associated with a second feedback message (220-b, 315-b) based at least in part on determining the first index; receiving (1810, 1915, 2010), from the base station, BS, a second offset between communicating subsequent feedback messages (220-a, 315-a, 220-b, 315-b, 315-c) of the plurality of feedback messages; receiving (1815, 1920, 2015) the first downlink message (310-a) of the plurality of downlink messages; transmitting (1820, 1925, 2020), to the base station, BS, the first feedback message (220-a, 315-a) of the plurality of feedback messages based at least in part on the first offset, the uplink control channel index and the determining of the first index; and transmitting (1825, 1930, 2025) the second feedback message (220-b, 315-b) of the plurality of feedback messages after transmitting the first feedback message (220-a, 315-a) and based at least in part on the second offset and the determining of the second index. receiving (1805, 1905, 2005), from a base station, BS, a downlink control message scheduling a plurality of downlink messages and indicating a first offset between communicating a first downlink message (310-a) of the plurality of downlink messages and communicating a first feedback message (220-a, 315-a) of a plurality of feedback messages that correspond to the plurality of downlink messages, wherein receiving (1805, 1905, 2005) the downlink control message comprises receiving, from the base station, BS, an indication in the downlink control message of a first index associated with the first feedback message (220-a, 315-a), the first index indicating a first quantity of frequency-domain resources and a second quantity of time-domain resources used to communicate the first feedback message (220-a, 315-a); determining the first index associated with the first feedback message (220-a, 315-a) based at least in part on the downlink control message, wherein determining the first index comprises: determining an uplink control channel index of the first feedback message (220-a, 315-a) based at least in part on the received indication in the downlink control message and a starting control channel element, CCE, index in the downlink control message; determining a second index associated with a second feedback message (220-b, 315-b) based at least in part on determining the first index; receiving (1810, 1915, 2010), from the base station, BS, a second offset between communicating subsequent feedback messages (220-a, 315-a, 220-b, 315-b, 315-c) of the plurality of feedback messages; receiving (1815, 1920, 2015) the first downlink message (310-a) of the plurality of downlink messages; transmitting (1820, 1925, 2020), to the base station, BS, the first feedback message (220-a, 315-a) of the plurality of feedback messages based at least in part on the first offset, the uplink control channel index and the determining of the first index; and transmitting (1825, 1930, 2025) the second feedback message (220-b, 315-b) of the plurality of feedback messages after transmitting the first feedback message (220-a, 315-a) and based at least in part on the second offset and the determining of the second index.