A method comprising: receiving, via one or more network interfaces of an automated assistant computing system: a first loT state notification from a first third-party system, the first loT state notification: transmitted to the automated assistant computing system, indicating a first state associated with a first group of one or more loT devices, and comprising: a unique identifier and a first state indication that indicates the first state associated with the first group of one or more loT devices; a second loT state notification from a second third-party system, the second loT state notification transmitted to the automated assistant computing system and indicating a second state associated with a second group of one or more loT devices and comprising: the unique identifier or an additional unique identifier, and a second state indication that indicates the second state associated with the second group of one or more loT devices; determining to transmit a combined notification that is based on both the first loT state notification and the second loT state notification, wherein determining to transmit the combined notification is based on determining, based on the first loT state notification and the second loT state notification, that the first state and the second state are co-occurring; identifying, by the automated assistant computing system based at least in part on the unique identifier, a plurality of candidate assistant client devices that each have a corresponding automated assistant client and that are each associated with both the first group of one or more loT devices and the second group of one or more loT devices; selecting at least one of the candidate assistant client devices; and transmitting, to the at least one of the candidate assistant client devices, a command that includes the combined notification and that causes the automated assistant client of the at least one of the candidate assistant client devices to: automatically render the combined notification via at least one user interface output device of the at least one of the candidate assistant client devices. receiving, via one or more network interfaces of an automated assistant computing system: a first loT state notification from a first third-party system, the first loT state notification: transmitted to the automated assistant computing system, indicating a first state associated with a first group of one or more loT devices, and comprising: a unique identifier and a first state indication that indicates the first state associated with the first group of one or more loT devices; a second loT state notification from a second third-party system, the second loT state notification transmitted to the automated assistant computing system and indicating a second state associated with a second group of one or more loT devices and comprising: the unique identifier or an additional unique identifier, and a second state indication that indicates the second state associated with the second group of one or more loT devices; a first loT state notification from a first third-party system, the first loT state notification: transmitted to the automated assistant computing system, indicating a first state associated with a first group of one or more loT devices, and comprising: a unique identifier and a first state indication that indicates the first state associated with the first group of one or more loT devices; a second loT state notification from a second third-party system, the second loT state notification transmitted to the automated assistant computing system and indicating a second state associated with a second group of one or more loT devices and comprising: the unique identifier or an additional unique identifier, and a second state indication that indicates the second state associated with the second group of one or more loT devices; determining to transmit a combined notification that is based on both the first loT state notification and the second loT state notification, wherein determining to transmit the combined notification is based on determining, based on the first loT state notification and the second loT state notification, that the first state and the second state are co-occurring; identifying, by the automated assistant computing system based at least in part on the unique identifier, a plurality of candidate assistant client devices that each have a corresponding automated assistant client and that are each associated with both the first group of one or more loT devices and the second group of one or more loT devices; selecting at least one of the candidate assistant client devices; and transmitting, to the at least one of the candidate assistant client devices, a command that includes the combined notification and that causes the automated assistant client of the at least one of the candidate assistant client devices to: automatically render the combined notification via at least one user interface output device of the at least one of the candidate assistant client devices.