multiple if loop condition and priting the output in a column

I've a data set with two columns shown below:

x1 | x2 ontime |ontime Alate |ontime ontime |Blate Alate |Blate

my desired output is

x12 ontime Alate Blate Alate

I was trying to write multiple if loops:

`df$x12<- if(df$x1=='Alate' & df$x2=='ontime')
 {
 print('Alate')
 }else if(df$x1=='ontime' & df$x2=='Blate')
 {
 print('Blate')
 }else if(df$x1=='Alate' & df$x2=='Blate')
 {
 print('Alate')
 }else 
 print('ontime')`

but it is not working it just prints "ontime" for all the rows with a warning: the condition has length > 1 and only the first element will be used